{ "151752-21912116": { "datetime_modified":"20260908T151707", "datetime_start":"20260909T160000", "datetime_end":"20260909T170000", "has_end_time":1, "date_start":"2026-09-09", "date_end":"2026-09-09", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"German Convo on the Go", "occurrence_title":"", "combined_title":"German Convo on the Go", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"Meet at Burton Tower for a 1-hour walk and talk in German with Mary Gell (magell@umich.edu). This event happens 'rain or shine.' Open to speakers of German at all levels.", "occurrence_notes":null, "guid":"151752-21912116@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151752", "building_id":"1000155", "building_name":"Burton Memorial Tower", "campus_maps_id":"25", "room":"Meet Outside the Tower", "location_name":"Burton Memorial Tower", "has_livestream":0, "cost":"", "tags":["European","German","German Studies","Germanic Languages And Literatures","Humanities","Language"], "website":"", "sponsors":[ { "group_name":"Germanic Languages & Literatures", "group_id":"3621", "website":"http:\/\/www.facebook.com\/umichGerman\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_151752_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_151752_original-1.jpg" }, "occurrence_count":13, "first_occurrence":21912116 } , "151166-21911027": { "datetime_modified":"20260909T060247", "datetime_start":"20260909T160000", "datetime_end":"20260909T180000", "has_end_time":1, "date_start":"2026-09-09", "date_end":"2026-09-09", "time_start":"16:00:00", "time_end":"18:00:00", "time_zone":"America\/Detroit", "event_title":"Ice Cream Social with MBW", "occurrence_title":"", "combined_title":"Ice Cream Social with MBW", "event_subtitle":"", "event_type":"Other", "event_type_id":"22", "description":"Come join MBW for some ice cream or a donut! Drop by Washtenaw Dairy to reconnect after summer, meet new friends, and learn more about the club.", "occurrence_notes":null, "guid":"151166-21911027@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151166", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"Washtenaw Dairy", "has_livestream":0, "cost":"", "tags":[], "website":"https:\/\/maizepages.umich.edu\/event\/12661511", "sponsors":[ { "group_name":"Maize Pages Student Organizations", "group_id":"2390", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_151166_original-42.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_lightbox\/media\/attachments\/2026\/09\/event_151166_original-42.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_151166_original-42.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_151166_original-42.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_151166_original-42.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_151166_original-42.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2026\/09\/event_151166_original-42.png" }, "occurrence_count":1, "first_occurrence":21911027 } , "141040-21907392": { "datetime_modified":"20260805T125826", "datetime_start":"20260909T160000", "datetime_end":"20260909T173000", "has_end_time":1, "date_start":"2026-09-09", "date_end":"2026-09-09", "time_start":"16:00:00", "time_end":"17:30:00", "time_zone":"America\/Detroit", "event_title":"LSA Transfer Information Session", "occurrence_title":"", "combined_title":"LSA Transfer Information Session: For students planning to apply to LSA as a transfer student.", "event_subtitle":"For students planning to apply to LSA as a transfer student.", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Join the LSA Transfer Recruitment Team for our virtual sessions where we will discuss LSA requirements, transfer credit, pre-transfer academic advising, LSA opportunities and other transfer tidbits.\r\n\r\nRegistration is required. Register using link to the right", "occurrence_notes":null, "guid":"141040-21907392@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141040", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"", "location_name":"Virtual", "has_livestream":0, "cost":"", "tags":["Transfer Students"], "website":"https:\/\/events.blackthorn.io\/en\/Hn1RKit7\/g\/1mzVXSHRqX", "sponsors":[ { "group_name":"LSA Transfer Student Center", "group_id":"4442", "website":"" }, { "group_name":"LSA Student Recruitment", "group_id":"4928", "website":"https:\/\/lsa.umich.edu\/lsa\/faculty-staff\/undergraduate-education\/student-recruitment.html" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/10\/event_141040_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/10\/event_141040_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/10\/event_141040_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/10\/event_141040_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/10\/event_141040_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/10\/event_141040_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/10\/event_141040_original-1.png" }, "occurrence_count":7, "first_occurrence":21907387 } , "151180-21911039": { "datetime_modified":"20260901T081333", "datetime_start":"20260909T160000", "datetime_end":"20260909T170000", "has_end_time":1, "date_start":"2026-09-09", "date_end":"2026-09-09", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Probability and Analysis Seminar: A Riemann-Hilbert approach to Dyson Brownian motion and Gaussian multiplicative chaos", "occurrence_title":"", "combined_title":"Probability and Analysis Seminar: A Riemann-Hilbert approach to Dyson Brownian motion and Gaussian multiplicative chaos: Nathan Hayford (Umich)", "event_subtitle":"Nathan Hayford (Umich)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract: The connection between random matrices and Gaussian multiplicative chaos (GMC) has been studied intensively since the work of Fyodorov and Keating (2014). There has been recent interest in the appearance of GMC in dynamical ensembles of random matrices and their eigenvalues, such as the Dyson Brownian motion (Keles 2025). We propose a Riemann-Hilbert approach to this problem. I will explain how our approach allows one to probe the \u201cmicroscopic scale\u201d (a scale which is inaccessible via loop equations), where the appearance of Painlev\u00e9 transcendents is anticipated. This is joint work with Ahmad Barhoumi.", "occurrence_notes":null, "guid":"151180-21911039@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151180", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Probability and Analysis Seminar - Department of Mathematics", "group_id":"5203", "website":"https:\/\/sites.google.com\/view\/probsemumich\/future-talks" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "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":"" }, "occurrence_count":1, "first_occurrence":21911039 } , "149581-21906722": { "datetime_modified":"20260803T153429", "datetime_start":"20260909T160000", "datetime_end":"20260909T170000", "has_end_time":1, "date_start":"2026-09-09", "date_end":"2026-09-09", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Stability, Approximation, and Robustness of Optimal Policies in POMDPs", "occurrence_title":"", "combined_title":"Stability, Approximation, and Robustness of Optimal Policies in POMDPs: Yunus Emre Demirci, UM", "event_subtitle":"Yunus Emre Demirci, UM", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"In this talk, I will focus on the stability, approximation, and robustness of optimal policies in partially observable Markov decision processes (POMDPs) under discounted and average cost criteria.\n\nI will begin with filter kernel perturbation under model change. I will establish how small perturbations in the transition or observation kernels lead to explicit, nonasymptotic bounds on both the filter kernel and the performance of the induced policies. A primary result demonstrates that an optimal policy computed under an incorrect model remains near optimal for the true model, with quantitatively bounded errors.\n\nBuilding on these stability concepts, I will then talk about the average cost setting and describe conditions under which the nonlinear filter exhibits a contraction property. Under these conditions, the vanishing discounted approach yields a solution to the average cost optimality equation, guaranteeing the existence of a stationary optimal policy. Furthermore, this provides explicit bounds that quantify the influence of initial prior distribution errors and model errors on long run performance.\n\nFinally, I will present results on implementable approximations. 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