{ "149737-21907014": { "datetime_modified":"20260913T135017", "datetime_start":"20260921T160000", "datetime_end":"20260921T170000", "has_end_time":1, "date_start":"2026-09-21", "date_end":"2026-09-21", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Orbit transversality for abelian varieties", "occurrence_title":"", "combined_title":"Orbit transversality for abelian varieties: Kaiwen Lu, Brown University", "event_subtitle":"Kaiwen Lu, Brown University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"The dynamical Mordell\u2013Lang problem asks how one forward orbit intersects a subvariety. We consider a complementary question over number fields, allowing passage to a suitable finite extension: can a proper Zariski-closed subset meet every rational grand orbit?\nAssuming a Zariski-dense forward orbit, Pasten and Silverman answered this question negatively for linear automorphisms of projective space and for self-morphisms of geometrically simple abelian varieties. We will see that the answer is no for every dominant self-morphism of an abelian variety, without the dense-orbit assumption. If time permits, we will also discuss the case of projective space.", "occurrence_notes":null, "guid":"149737-21907014@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149737", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3096", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Dynamics","Number Theory"], "website":"", "sponsors":[ { "group_name":"Complex Analysis, Dynamics and Geometry Seminar - Department of Mathematics", "group_id":"4887", "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":21907014 } , "149325-21906234": { "datetime_modified":"20260713T141519", "datetime_start":"20260921T160000", "datetime_end":"20260921T172000", "has_end_time":1, "date_start":"2026-09-21", "date_end":"2026-09-21", "time_start":"16:00:00", "time_end":"17:20:00", "time_zone":"America\/Detroit", "event_title":"Public Finance Seminar: Monday, September 21", "occurrence_title":"", "combined_title":"Public Finance Seminar: Monday, September 21: Joyce Kim, University of Michigan", "event_subtitle":"Joyce Kim, University of Michigan", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"--", "occurrence_notes":"For those not familiar with the academic and residential towers of North Quad, please refer to this link for wayfindng guidance: https:\/\/lsa.umich.edu\/content\/dam\/econ-assets\/Econdocs\/NQ%20Econ%20Department%20Directions.pdf", "guid":"149325-21906234@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149325", "building_id":"1005177", "building_name":"North Quad", "campus_maps_id":"553", "room":"4325", "location_name":"North Quad", "has_livestream":0, "cost":"", "tags":["Economics","Public Finance","seminar"], "website":"http:\/\/www.lsa.umich.edu\/econ", "sponsors":[ { "group_name":"Department of Economics", "group_id":"3302", "website":"http:\/\/www.lsa.umich.edu\/econ" }, { "group_name":"Public Finance", "group_id":"3553", "website":"" }, { "group_name":"Department of Economics Seminars", "group_id":"3566", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/07\/event_149325_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/07\/event_149325_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/07\/event_149325_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/07\/event_149325_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/07\/event_149325_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/07\/event_149325_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/07\/event_149325_original-1.png" }, "occurrence_count":1, "first_occurrence":21906234 } }