[ { "id":"148372-21904151", "datetime_modified":"20260521T115745", "datetime_start":"20260605T120000", "datetime_end":"20260605T140000", "has_end_time":1, "date_start":"2026-06-05", "date_end":"2026-06-05", "time_start":"12:00:00", "time_end":"14:00:00", "time_zone":"America\/Detroit", "event_title":"Dynamic Contracting: Sequential Payments, Stochastic Target Problems, and State-Constrained Control", "occurrence_title":"", "combined_title":"Dynamic Contracting: Sequential Payments, Stochastic Target Problems, and State-Constrained Control: Liwei Huang", "event_subtitle":"Liwei Huang", "event_type":"Presentation", "event_type_id":"16", "description":"Abstract:\n\nThis thesis develops stochastic-control methods for dynamic principal\u2013agent problems in continuous time. The first part studies adverse selection with moral hazard, where the agent privately observes her type. We reformulate the principal\u2019s problem as an optimal control problem with partial information and state constraints, and characterize the value through state-constrained HJB equations. The second part studies sequential contracting with multiple lump-sum payments at fixed dates, using recursive BSDEs to reduce the Stackelberg problem to a single stochastic control problem with mixed static and continuous controls. The third part allows the principal to choose both the timing and size of discretionary bonuses, leading to a mixed control-stopping problem characterized by HJB variational inequalities. Together, the thesis shows how private information, payment timing, and contractual flexibility shape optimal incentive design.", "occurrence_notes":null, "guid":"148372-21904151@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148372", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"4096", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics","Graduate Students","Dissertation","Graduate"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "image_description":"Math equations on a chalkboard.", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/05\/event_148372_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/05\/event_148372_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/148372\/qrcode.png", "occurrence_count":1, "first_occurrence":21904151 } , { "id":"148398-21904185", "datetime_modified":"20260522T102454", "datetime_start":"20260605T130000", "datetime_end":"20260605T150000", "has_end_time":1, "date_start":"2026-06-05", "date_end":"2026-06-05", "time_start":"13:00:00", "time_end":"15:00:00", "time_zone":"America\/Detroit", "event_title":"Learning with Quantum Examples: Multiclass, Online, and Smoothed Settings", "occurrence_title":"", "combined_title":"Learning with Quantum Examples: Multiclass, Online, and Smoothed Settings: Preetham Mohan", "event_subtitle":"Preetham Mohan", "event_type":"Presentation", "event_type_id":"16", "description":"Abstract:\n\nAs quantum computing progresses toward fault-tolerant architectures, the question of which computational tasks admit provable quantum advantages and which do not has become increasingly central. Learning theory, and in particular learning from quantum examples, provides one of the few settings in which unconditional quantum-classical separations can be established. In distribution-free (i.e., worst-case) PAC learning, existing results show that quantum examples provide no asymptotic advantage in sample complexity. In contrast, under the uniform distribution, unbounded quantum-classical separations are known for learning Fourier-sparse Boolean functions. Together, these results reveal a striking dichotomy. However, this understanding has largely been developed in the context of learning Boolean functions in the batch setting, leaving open how these phenomena extend more broadly. This thesis develops the theory of learning with quantum examples beyond the batch Boolean setting along three directions: multiclass learning, online learning, and smoothed learning.\n\nIn the multiclass PAC setting, we establish upper and lower bounds on quantum sample complexity in both the realizable and agnostic regimes, finding that quantum examples continue to yield no distribution-independent separation from classical examples, with learning rates governed by the Natarajan dimension up to logarithmic factors in the label-space size. We next study online learning, where no standard framework for learning with quantum examples existed prior to this work. We provide such a model by lifting the classical online framework to one in which the adversary provides distributions over labeled examples, and then by encoding these distributions as quantum examples. We establish expected regret guarantees for binary and multiclass classification in both the realizable and agnostic settings. The central finding is that unrestricted adversarial power permits highly concentrated distributions that dequantize the learning problem. Motivated by this dequantization phenomenon, we develop a smoothed learning framework that constrains distributions to be smooth, interpolating between the concentrated-distribution regime, in which no quantum advantage exists, and the uniform-distribution regime, in which unbounded separations are known. For the class of Fourier-sparse Boolean functions, we show that such separations persist throughout a nontrivial near-uniform regime in both the batch and online settings.\n\nTogether, these results paint a coherent picture of learning with quantum examples beyond the batch Boolean setting, showing that quantum-classical separations depend on the interplay between hypothesis class structure, distributional assumptions, and the degree of adversarial control permitted in the learning process.", "occurrence_notes":null, "guid":"148398-21904185@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148398", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"3088", "location_name":"East Hall", "has_livestream":1, "livestream_type":"zoom", "livetream_require_login":0, "livestream_id":"94724722291", "livestream_password":"545962", "livestream_link":"https:\/\/umich.zoom.us\/j\/94724722291", "cost":"", "tags":["Mathematics","Graduate Students","Graduate","Dissertation"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "image_description":"Math equations on a chalkboard.", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/05\/event_148398_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/05\/event_148398_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/148398\/qrcode.png", "occurrence_count":1, "first_occurrence":21904185 } , { "id":"148433-21904254", "datetime_modified":"20260527T111038", "datetime_start":"20260609T110000", "datetime_end":"20260609T130000", "has_end_time":1, "date_start":"2026-06-09", "date_end":"2026-06-09", "time_start":"11:00:00", "time_end":"13:00:00", "time_zone":"America\/Detroit", "event_title":"Modular degree of elliptic curves over function fields in relation to Jacquet-Langlands", "occurrence_title":"", "combined_title":"Modular degree of elliptic curves over function fields in relation to Jacquet-Langlands: Lukas Scheiwiller", "event_subtitle":"Lukas Scheiwiller", "event_type":"Presentation", "event_type_id":"16", "description":"Abstract:\n\nIn this thesis, we study the geometry of automorphic forms in the function field setting. The primary goal of this thesis prove a formula relating degrees of modular parametrization of an elliptic curve by different Drinfeld modular curves. This is analogous to the similar result of Ribet-\nTakahashi [RT97] in the number field setting, which relates degrees of modular parameterizations of an elliptic curve over Q by varying Shimura curves. To prove this result, I prove a result analogous to Ribet\u2019s short exact sequence [Rib90a] which relates the special fibers of Shimura varieties at different primes. Using this technical result I deduce (in the function field case) level-lowering results akin to those of Ribet [Rib90a] and relations between Petersson inner products of modular forms that are related by the Jacquet-Langlands correspondence similar to the work of K. Prasanna [Pra03].", "occurrence_notes":null, "guid":"148433-21904254@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148433", "building_id":"", "building_name":"Off Campus Location", "building_official_id":null, "campus_maps_id":"1", "campus_maps_link_path":"", "campus_maps_link":"", "room":"", "location_name":"Virtual", "has_livestream":1, "livestream_type":"zoom", "livetream_require_login":0, "livestream_id":"92090159796", "livestream_password":"modular", "livestream_link":"https:\/\/umich.zoom.us\/j\/92090159796", "cost":"", "tags":["Mathematics","Graduate Students","Graduate","Dissertation"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "image_description":"Math equations on a chalkboard.", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/05\/event_148433_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/05\/event_148433_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/148433\/qrcode.png", "occurrence_count":1, "first_occurrence":21904254 } , { "id":"146386-21898980", "datetime_modified":"20260310T061642", "datetime_start":"20260908T160000", "datetime_end":"20260908T170000", "has_end_time":1, "date_start":"2026-09-08", "date_end":"2026-09-08", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Colloquium: TBA", "occurrence_title":"", "combined_title":"Colloquium: TBA: Lauren K. Williams, Harvard University", "event_subtitle":"Lauren K. Williams, Harvard University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"146386-21898980@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/146386", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/people.math.harvard.edu\/~williams\/", "links":[ { "type":"other", "url":"https:\/\/people.math.harvard.edu\/~williams\/", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "image_description":"Lauren K Williams", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/03\/event_146386_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/03\/event_146386_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/146386\/qrcode.png", "occurrence_count":1, "first_occurrence":21898980 } , { "id":"148388-21904175", "datetime_modified":"20260522T084819", "datetime_start":"20260911T150000", "datetime_end":"20260911T160000", "has_end_time":1, "date_start":"2026-09-11", "date_end":"2026-09-11", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Combinatorics Seminar", "occurrence_title":"", "combined_title":"Combinatorics Seminar: Olya Mandelshtam (Waterloo)", "event_subtitle":"Olya Mandelshtam (Waterloo)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"TBA", "occurrence_notes":null, "guid":"148388-21904175@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148388", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"4088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "image_description":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/148388\/qrcode.png", "occurrence_count":1, "first_occurrence":21904175 } , { "id":"140882-21887766", "datetime_modified":"20251020T001438", "datetime_start":"20260923T153000", "datetime_end":"20260923T170000", "has_end_time":1, "date_start":"2026-09-23", "date_end":"2026-09-23", "time_start":"15:30:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Algebraic Geometry Seminar: TBA", "occurrence_title":"", "combined_title":"Algebraic Geometry Seminar: TBA: Salvatore Floccari (Humboldt University of Berlin)", "event_subtitle":"Salvatore Floccari (Humboldt University of Berlin)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"TBA", "occurrence_notes":null, "guid":"140882-21887766@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/140882", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"4096", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "image_description":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/140882\/qrcode.png", "occurrence_count":1, "first_occurrence":21887766 } , { "id":"141373-21888712", "datetime_modified":"20260407T124520", "datetime_start":"20261007T160000", "datetime_end":"20261007T170000", "has_end_time":1, "date_start":"2026-10-07", "date_end":"2026-10-07", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Robust and Risk-Sensitive Acceleration in Gradient Methods", "occurrence_title":"", "combined_title":"Robust and Risk-Sensitive Acceleration in Gradient Methods: Mert Gurbuzbalaban, Rutgers", "event_subtitle":"Mert Gurbuzbalaban, Rutgers", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"First-order methods such as gradient descent (GD) are foundational in optimization. In unconstrained problems with exact gradients, momentum-based methods\u2014most notably Nesterov\u2019s accelerated gradient descent (AGD) and Polyak\u2019s heavy-ball (HB) method\u2014achieve faster convergence by improving dependence on the condition number. However, this acceleration comes at a cost: momentum amplifies gradient noise, making these methods less robust than GD under standard parameter choices and requiring more accurate gradient estimates to attain comparable accuracy. Similar challenges arise in convex and nonconvex min\u2013max optimization.\nMotivated by applications in machine learning, this talk studies unconstrained and min\u2013max optimization under deterministic, unbiased stochastic, and biased stochastic gradient noise. I will present new algorithms that achieve optimal robustness against different noise types, using control-theoretic tools such as the H_2\u200b norm, the H_\u221e\u200b norm, and the risk-sensitivity index, together with coherent risk measures. I will also discuss worst-case noise constructions and high-probability convergence guarantees. This perspective builds a bridge between optimization and robust control theory and enables the design of noise-robust and risk-sensitive accelerated methods.\nRepresentative Publications:\nM. G\u00fcrb\u00fczbalaban, Y. Syed, N. S. Aybat, Accelerated gradient methods with biased gradient estimates: Risk sensitivity, high-probability guarantees, and large deviation bounds, Journal of Nonlinear and Variational Analysis, 2026 (Special Issue). https:\/\/jnva.biemdas.com\/archives\/2927\nM. G\u00fcrb\u00fczbalaban, Robustly Stable Accelerated Momentum Methods with a Near-Optimal L_2\u200b Gain and H_\u221e\u200b Performance, Mathematics of Operations Research, 2025.\nhttps:\/\/pubsonline.informs.org\/doi\/abs\/10.1287\/moor.2023.0321\nB. Can and M. G\u00fcrb\u00fczbalaban, Entropic risk-averse generalized momentum methods, Optimization Methods and Software, 2025. https:\/\/www.tandfonline.com\/doi\/abs\/10.1080\/10556788.2025.2549356", "occurrence_notes":null, "guid":"141373-21888712@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141373", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "image_description":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/141373\/qrcode.png", "occurrence_count":1, "first_occurrence":21888712 } , { "id":"146416-21899058", "datetime_modified":"20260310T125925", "datetime_start":"20261021T153000", "datetime_end":"20261021T165000", "has_end_time":1, "date_start":"2026-10-21", "date_end":"2026-10-21", "time_start":"15:30:00", "time_end":"16:50:00", "time_zone":"America\/Detroit", "event_title":"Algebraic Geometry Seminar: TBA", "occurrence_title":"", "combined_title":"Algebraic Geometry Seminar: TBA: Xiaolei Zhao (UC Santa Barbara)", "event_subtitle":"Xiaolei Zhao (UC Santa Barbara)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"TBA", "occurrence_notes":null, "guid":"146416-21899058@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/146416", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "links":[ ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "image_description":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/146416\/qrcode.png", "occurrence_count":1, "first_occurrence":21899058 } , { "id":"148250-21903442", "datetime_modified":"20260515T044220", "datetime_start":"20261027T160000", "datetime_end":"20261027T170000", "has_end_time":1, "date_start":"2026-10-27", "date_end":"2026-10-27", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Colloquium: TBA", "occurrence_title":"", "combined_title":"Colloquium: TBA: Lin Lin, U Berkeley", "event_subtitle":"Lin Lin, U Berkeley", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"148250-21903442@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148250", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics","Applied Mathematics"], "website":"https:\/\/math.berkeley.edu\/~linlin\/", "links":[ { "type":"other", "url":"https:\/\/math.berkeley.edu\/~linlin\/", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "image_description":"Lin Lin", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/05\/event_148250_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/05\/event_148250_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/148250\/qrcode.png", "occurrence_count":1, "first_occurrence":21903442 } , { "id":"141176-21888297", "datetime_modified":"20251028T082420", "datetime_start":"20261110T160000", "datetime_end":"20261110T170000", "has_end_time":1, "date_start":"2026-11-10", "date_end":"2026-11-10", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"2026 Van Eenan Lectures: Ronnie Sircar", "occurrence_title":"", "combined_title":"2026 Van Eenan Lectures: Ronnie Sircar: Princeton University", "event_subtitle":"Princeton University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"141176-21888297@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141176", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/sircar.princeton.edu\/", "links":[ { "type":"other", "url":"https:\/\/sircar.princeton.edu\/", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "image_description":"Ronnie Sircar", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/141176\/qrcode.png", "occurrence_count":3, "first_occurrence":21888297 } , { "id":"141176-21888405", "datetime_modified":"20251028T082420", "datetime_start":"20261111T160000", "datetime_end":"20261111T170000", "has_end_time":1, "date_start":"2026-11-11", "date_end":"2026-11-11", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"2026 Van Eenan Lectures: Ronnie Sircar", "occurrence_title":"", "combined_title":"2026 Van Eenan Lectures: Ronnie Sircar: Princeton University", "event_subtitle":"Princeton University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"141176-21888405@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141176", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/sircar.princeton.edu\/", "links":[ { "type":"other", "url":"https:\/\/sircar.princeton.edu\/", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "image_description":"Ronnie Sircar", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/141176\/qrcode.png", "occurrence_count":3, "first_occurrence":21888297 } , { "id":"141176-21888406", "datetime_modified":"20251028T082420", "datetime_start":"20261112T160000", "datetime_end":"20261112T170000", "has_end_time":1, "date_start":"2026-11-12", "date_end":"2026-11-12", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"2026 Van Eenan Lectures: Ronnie Sircar", "occurrence_title":"", "combined_title":"2026 Van Eenan Lectures: Ronnie Sircar: Princeton University", "event_subtitle":"Princeton University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"141176-21888406@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141176", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/sircar.princeton.edu\/", "links":[ { "type":"other", "url":"https:\/\/sircar.princeton.edu\/", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "image_description":"Ronnie Sircar", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/10\/event_141176_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/10\/event_141176_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/141176\/qrcode.png", "occurrence_count":3, "first_occurrence":21888297 } , { "id":"142065-21889962", "datetime_modified":"20251205T091103", "datetime_start":"20270420T160000", "datetime_end":"20270420T170000", "has_end_time":1, "date_start":"2027-04-20", "date_end":"2027-04-20", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Colloquium: TBA", "occurrence_title":"", "combined_title":"Colloquium: TBA: Hong Wang, IHES", "event_subtitle":"Hong Wang, IHES", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"TBA", "occurrence_notes":null, "guid":"142065-21889962@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/142065", "building_id":"1000166", "building_name":"East Hall", "building_official_id":1000166, "campus_maps_id":"53", "campus_maps_link_path":"east-hall", "campus_maps_link":"https:\/\/maps.studentlife.umich.edu\/building\/east-hall", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/sites.google.com\/view\/hongwang\/home", "links":[ { "type":"other", "url":"https:\/\/sites.google.com\/view\/hongwang\/home", "title":null } ], "sponsors":[ { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "image_description":"Needle", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/11\/event_142065_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/11\/event_142065_original-1.jpg" }, "qr_code_url":"http:\/\/events.umich.edu\/event\/142065\/qrcode.png", "occurrence_count":1, "first_occurrence":21889962 } ]