{ "152058-21912775": { "datetime_modified":"20260913T162116", "datetime_start":"20260914T160000", "datetime_end":"20260914T170000", "has_end_time":1, "date_start":"2026-09-14", "date_end":"2026-09-14", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"GLNT: Minimal lifts of mod-3 modular forms", "occurrence_title":"", "combined_title":"GLNT: Minimal lifts of mod-3 modular forms: Preston Wake (MSU)", "event_subtitle":"Preston Wake (MSU)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract: Serre's conjecture has two parts: a modularity part \u2014 that predicts which mod-ell Galois representations come from a modular form \u2014 and a minimal-lifting part \u2014 that predicts the minimal weight, level, and character of the modular form. Not long after formulating the conjecture, Serre found a counterexample to the minimal-lifting part for small values of ell (ell<5), where the character part of the prediction is wrong. In this talk, I'll discuss a variant of the minimal-lifting conjecture where the nebentypus character is replaced by the character used to define a supercuspidal representation. I will show that, in this case, even for ell=3, there is no obstruction to finding minimal lifts. This is joint work with Patrick Allen.", "occurrence_notes":null, "guid":"152058-21912775@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152058", "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":"Group, Lie and Number Theory Seminar - Department of Mathematics", "group_id":"4892", "website":"" }, { "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":21912775 } , "152056-21912773": { "datetime_modified":"20260913T130335", "datetime_start":"20260914T160000", "datetime_end":"20260914T170000", "has_end_time":1, "date_start":"2026-09-14", "date_end":"2026-09-14", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Plabic Graphs, Honeycombs, and Hives", "occurrence_title":"", "combined_title":"Plabic Graphs, Honeycombs, and Hives: Yucong Lei", "event_subtitle":"Yucong Lei", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"This expository talk introduces three families of combinatorial objects connecting linear algebra, representation theory, and the geometry of the Grassmannian. Plabic graphs were introduced by Postnikov to index and parametrize positroid cells in the totally nonnegative Grassmannian. Knutson and Tao's honeycombs describe eigenvalues of Hermitian matrices A, B, and A+B; their dual model, hives, give a lattice-point-counting rule for Littlewood-Richardson coefficients. Through small examples, I will explain each construction, and illustrate the correspondence between honeycombs and hives, and their relationships to local moves on plabic graphs. No prior familiarity with the topics will be assumed. This exposition follows a part of Postnikov's talk \"Honeycombs, Plabic Graphs, and Polypositroids\" from AsiaComb 2026, supplemented by the work of Knutson-Tao-Woodward on hives and the octahedron recurrence.", "occurrence_notes":null, "guid":"152056-21912773@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152056", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3866", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Student Combinatorics Seminar - Department of Mathematics", "group_id":"4907", "website":"" }, { "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":"", 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Join us for this information session to learn about the UVA McIntire M.S. in Commerce (MSC) program with tracks in Biotechnology, Business Analytics, Finance, and Marketing & Management, the M.S. in Accounting (MSA) program with tracks in Financial Reporting & Assurance and Tax Consulting, as well as the M.S. in Global Commerce (MSGC) program.\n\nThis session will include a comprehensive overview of the academic programs, student experience, and career development support as well as an overview of the admissions process and next steps.\n\nOpen to all prospective students interested in graduate study in business.\n\nThis event is on the first floor of a wheelchair-accessible building, including wheelchair-accessible restrooms on the first floor, a gender-inclusive and accessible restroom on the first floor, places to sit or stand during the event, and accessible parking options nearby on Maynard Street. Ramps are located at the East entrance (from State St.) and the Northwest entrance (from Maynard). 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