{ "144089-21894639": { "datetime_modified":"20260118T144519", "datetime_start":"20260121T150000", "datetime_end":"20260121T160000", "has_end_time":1, "date_start":"2026-01-21", "date_end":"2026-01-21", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Riemann's Existence Theorem", "occurrence_title":"", "combined_title":"Riemann's Existence Theorem: Jacob Zweifler", "event_subtitle":"Jacob Zweifler", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"If you search for statements of Riemann\u2019s Existence Theorem, you will find many seemingly different statements which all might deserve their own name. These statements, which go under the name RET, range from the existence of nonconstant meromorphic functions on compact Riemann surfaces to the classification of finite branched covers via fundamental group monodromy. Also related is the fact that all compact Riemann surfaces are algebraic. In this talk, I will explain how these different concepts are closely related (while using as little analysis as possible).", "occurrence_notes":null, "guid":"144089-21894639@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/144089", "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 Dynamics\/Geometry\/Topology Seminar - Department of Mathematics", "group_id":"4909", "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":21894639 } , "143080-21892025": { "datetime_modified":"20251223T095234", "datetime_start":"20260121T151000", "datetime_end":"20260121T161000", "has_end_time":1, "date_start":"2026-01-21", "date_end":"2026-01-21", "time_start":"15:10:00", "time_end":"16:10:00", "time_zone":"America\/Detroit", "event_title":"MIPSE Seminar | Breaking Newton\u2019s Law: Using Dusty Plasma to Investigate Anisotropic Forces", "occurrence_title":"", "combined_title":"MIPSE Seminar | Breaking Newton\u2019s Law: Using Dusty Plasma to Investigate Anisotropic Forces: Prof. Lorin Swint Matthews, Baylor University", "event_subtitle":"Prof. Lorin Swint Matthews, Baylor University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Abstract: \r\nThe stability of structures and transport of energy are affected by the forces acting between elements in the system. We are used to thinking of forces in terms of Newton\u2019s third law: for every action there is an equal and opposite reaction. However, there are some systems where the forces appear to be non-reciprocal; the objects exert different forces on each other. Such an interaction is possible when the interaction is anisotropic. In this case, the force between two particles depends on their relative orientation. Anisotropic interactions are known to arise in some of the most interesting complex systems, including proteins, electrorheological (ER) fluids, and liquid crystals. Here, we study anisotropic interactions in a complex, or dusty, plasma. We use numerical models of the interactions between ions and dust to learn the form of the anisotropic interaction potential. We can then use this potential to model the dynamics of interacting dust particles without modeling the ions. We compare the results of our models to experimental data collected in laboratory experiments conducted here on earth and on the International Space Station.\r\nThis work was supported by the US Department of Energy, Office of Fusion Energy Sciences (DE-SC0024681) and National Science Foundation (PHY-2308742, PHY-2308743).\r\n\r\nAbout the Speaker: \r\nLorin Swint Matthews is a Professor and Chair of the Department of Physics and Astronomy at Baylor University and Associate Director of the Center for Astrophysics, Space Physics, and Engineering Research. She received her Ph.D. in Physics from Baylor University in 1998. She worked for Raytheon Aircraft Integration Systems from 1998-2000 as a multi-disciplined engineer in the Flight Sciences Department, where she worked on NASA\u2019s SOFIA (Stratospheric Observatory for Infrared Astronomy) aircraft. In 2000, she joined the faculty at Baylor University. Her areas of research include numerical modeling and experimental investigations of the charging and dynamics of dust in astrophysical and laboratory plasma environments, for which she received a National Science Foundation CAREER Award in 2009. She is a Fellow of the American Physical Society.\r\n\r\nThis seminar is free and open to the public. It will be conducted in person and on Zoom, please check MIPSE website for details: https:\/\/mipse.umich.edu\/seminars_2526.php", "occurrence_notes":null, "guid":"143080-21892025@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/143080", "building_id":"1000448", "building_name":"Electrical Engineering and Computer Science Building", "campus_maps_id":"56", "room":"1003", "location_name":"Electrical Engineering and Computer Science Building", "has_livestream":0, "cost":"", "tags":["Engineering","In Person","Michigan Engineering","Physics","Plasma","seminar","Talk"], "website":"https:\/\/mipse.umich.edu\/seminars_2526.php", "sponsors":[ { "group_name":"Michigan Institute for Plasma Science and Engineering (MIPSE)", "group_id":"4073", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/12\/event_143080_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/12\/event_143080_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21892025 } }