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Michigan)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"In addition to proving several additional identities for back-stable Schubert polynomials, we will give determinantal and (new?) tableau formulas for these polynomials for 321-avoiding permutations.", "occurrence_notes":null, "guid":"140306-21886900@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/140306", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4096", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "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":21886900 } , "140052-21886541": { "datetime_modified":"20250930T082225", "datetime_start":"20251009T153000", "datetime_end":"20251009T162000", "has_end_time":1, "date_start":"2025-10-09", "date_end":"2025-10-09", "time_start":"15:30:00", "time_end":"16:20:00", "time_zone":"America\/Detroit", "event_title":"The Department of Astronomy 2025-2026 Colloquium Series Presents:", "occurrence_title":"", "combined_title":"The Department of Astronomy 2025-2026 Colloquium Series Presents:: Dr. Ralph E. Pudritz, Professor, McMaster University", "event_subtitle":"Dr. Ralph E. Pudritz, Professor, McMaster University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"\"Connecting planetary properties with formation: a new paradigm emerges\"\r\n\r\nAbstract: One of the central challenges facing planet formation theory is in understanding how observed planetary properties \u2013 their masses, orbital characteristics, bulk properties and atmospheric compositions \u2013 are connected to their formation in host protoplanetary disks (PPDs). Forming planets accrete pebbles, planetesimals, and gas with a wide range of chemical compositions as they migrate through their evolving PPDs. Essential to these processes is how angular momentum is transported and removed from disks. Recent powerful MHD simulations and a wide range of ALMA and JWST observations confirm that MHD disk winds and not disk turbulence likely play the dominant role. In this talk, I will review these advances, their consequences for a new paradigm for planet formation, and discuss several current projects in my group on the effects of such winds on planetary populations and planetary properties such as their mass-radius relations.", "occurrence_notes":null, "guid":"140052-21886541@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/140052", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["astronomy","astrophysics"], "website":"https:\/\/lsa.umich.edu\/astro", "sponsors":[ { "group_name":"Department of Astronomy", "group_id":"1178", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/09\/event_140052_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/09\/event_140052_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2025\/09\/event_140052_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2025\/09\/event_140052_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2025\/09\/event_140052_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2025\/09\/event_140052_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2025\/09\/event_140052_original-1.png" }, "occurrence_count":1, "first_occurrence":21886541 } }