{ "129213-21862336": { "datetime_modified":"20241118T094335", "datetime_start":"20241120T150000", "datetime_end":"20241120T160000", "has_end_time":1, "date_start":"2024-11-20", "date_end":"2024-11-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Learning Seminar in Algebraic Combinatorics: Examples of Poincare polynomials and Chow rings", "occurrence_title":"", "combined_title":"Learning Seminar in Algebraic Combinatorics: Examples of Poincare polynomials and Chow rings: David Speyer", "event_subtitle":"David Speyer", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"We'll work through examples of computing the lattice of flats, Mobius invariant, Poincare polynomial and Chow ring of a hyperplane arrangement. This will be an active learning class, so please come prepared to get up and work at a chalkboard!", "occurrence_notes":null, "guid":"129213-21862336@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/129213", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":[], "website":"", "sponsors":[ { "group_name":"Learning Seminar in Algebraic Combinatorics - Department of Mathematics", "group_id":"4894", "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":21862336 } , "128611-21861363": { "datetime_modified":"20241205T123122", "datetime_start":"20241120T150000", "datetime_end":"20241120T160000", "has_end_time":1, "date_start":"2024-11-20", "date_end":"2024-11-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"NACDD Public Health AmeriCorps Service Member Information Session - November 2024", "occurrence_title":"", "combined_title":"NACDD Public Health AmeriCorps Service Member Information Session - November 2024", "event_subtitle":"", "event_type":"Careers \/ Jobs", "event_type_id":"2", "description":"Join the next generation of public health leaders!\u00a0The National Association of Chronic Disease Directors (NACDD) Public Health AmeriCorps program (PHA) is currently recruiting for 30+ Service Opportunities in 20 states across the nation.\u00a0NACDD\u2019s PHA program is designed to address the public health needs of local communities while creating pathways to high-quality public health careers for Service Members. PHA Service Members will work with a State Health Department, Local Health Department, community-based organization,\u202fand\/or YMCA, to advance existing efforts around food and nutrition security, safe physical activity access, social connectedness, and health equity.\u00a0Benefits for Service Members include a stipend\/living allowance, real-world experience in the public health field, tailored mentorship\/coaching, opportunities to network with the PHA community, and eligibility for a Segal Education Award upon completion of service. Service may be used to fulfill practicum or applied experience requirements.\u00a0The application deadline for upcoming service opportunities is 11:59 pm ET on Friday December 20th, 2024. Register for the webinar to learn more about NACDD's PHA program and benefits for Service Members.", "occurrence_notes":null, "guid":"128611-21861363@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/128611", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"", "has_livestream":0, "cost":"", "tags":[], "website":"", "sponsors":[ { "group_name":"University Career Center UCC", "group_id":"1140", "website":"http:\/\/careercenter.umich.edu" } ], "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":21861363 } , "128971-21861963": { "datetime_modified":"20241108T210433", "datetime_start":"20241120T150000", "datetime_end":"20241120T160000", "has_end_time":1, "date_start":"2024-11-20", "date_end":"2024-11-20", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Probability Seminar: A new approach to strong convergence of random matrices", "occurrence_title":"", "combined_title":"Probability Seminar: A new approach to strong convergence of random matrices: Jorge Garza Vargas (Caltech)", "event_subtitle":"Jorge Garza Vargas (Caltech)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Friedman's celebrated 2004 result states that, as the number of vertices goes to infinity, random d-regular graphs are (with high probability) nearly optimal expanders, meaning that the top non-trivial eigenvalue of their (random) adjacency matrix converges in probability to 2 sqrt(d-1). Since expanders are of great interest in mathematics and computer science, Friedman's paper (which is ~100 pages long) has attracted a lot of attention in the last two decades and more efficient proofs of his result (which yield vast generalizations) have been found. However, all the approaches to Friedman's theorem and its extensions relied on very delicate and sophisticated combinatorial considerations, making it hard to apply those ideas to other settings of interest.\r\n\r\nIn this talk I will discuss a fundamentally new (analytic) approach to Friedman's theorem which yields an elementary proof that can be written in just a few pages. Our approach also allows us to establish strong convergence (i.e. sharp norm estimates) for much more general models of tuples of random matrices (random regular graphs corresponding to the particular case of adding independent random permutations). These results can be used to show that certain infinite objects admit very strong finite dimensional approximations, which has important implications in operator algebras, spectral geometry, and differential geometry.\r\n\r\nThis is joint work with Chi-Fang Chen, Joel Tropp, and Ramon van Handel.", "occurrence_notes":null, "guid":"128971-21861963@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/128971", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3098", "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":21861963 } }