{ "141778-21889352": { "datetime_modified":"20251111T161500", "datetime_start":"20251119T160000", "datetime_end":"20251119T172000", "has_end_time":1, "date_start":"2025-11-19", "date_end":"2025-11-19", "time_start":"16:00:00", "time_end":"17:20:00", "time_zone":"America\/Detroit", "event_title":"RTG Seminar Geometry, Topology, Dynamics: Metric Lines in Carnot groups", "occurrence_title":"", "combined_title":"RTG Seminar Geometry, Topology, Dynamics: Metric Lines in Carnot groups: A. Bravo-Doddoli", "event_subtitle":"A. Bravo-Doddoli", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Among nilpotent Lie groups, Carnot groups form a particularly important subclass, with the Heisenberg group being the most well-known example. Carnot groups admit the structure of a sub-Riemannian manifold. Thus, to broaden the context, a sub-Riemannian geodesic is a local arc-length-minimizing curve. A natural question is: What are the conditions for a geodesic to be a global minimizer? A curve is called a metric line if it is a globally minimizing geodesic; an alternative term is \u201can isometric embedding of the real line.\u201d The talk is devoted to presenting the results and ideas that inspired me to formulate a conjecture classifying metric lines in Carnot groups, as well as the results obtained in this direction.", "occurrence_notes":null, "guid":"141778-21889352@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141778", "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":"Geometry Seminar - Department of Mathematics", "group_id":"4891", "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":21889352 } , "141926-21889641": { "datetime_modified":"20251116T220100", "datetime_start":"20251119T160000", "datetime_end":"20251119T170000", "has_end_time":1, "date_start":"2025-11-19", "date_end":"2025-11-19", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Student AIM Seminar: Barycentric Lagrange Tree-Traversal Fast Summation Algorithms", "occurrence_title":"", "combined_title":"Student AIM Seminar: Barycentric Lagrange Tree-Traversal Fast Summation Algorithms: Horacio Moreno Montanes", "event_subtitle":"Horacio Moreno Montanes", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Tree-based algorithms are popular methods for the fast summation of particle interactions, including the Barnes-Hut treecode and the Greengard-Rokhlin fast multiple method, which reduce the operation count for a given tolerance from O(N) to O(NlogN) and O(N) respectively. Since then, there have been several improvements to these algorithms to solve different problems. In this talk, we present the Kernel Independent Treecode (KITC) [1] and the Barycentric Lagrange Dual Tree Traversal (BLDTT) [2] methods, both of which take advantage of the stability properties of barycentric Lagrange polynomial interpolation which will also be discussed. Additionally, we will show how these methods are easily parallelizable using CPUs or GPUs, as well as discussing the performance with examples of problems in fluid and plasma dynamics where these methods have been used. Finally, we present plans for future implementations of these methods in modeling the solar magnetic field in the solar corona.\r\n\r\n[1] L. Wang, R. Krasny, and S. Tlupova, \u201cA kernel-independent treecode based on barycentric lagrange interpolation\u201d, CiCP 28, 1415\u20131436 (2020).\r\n\r\n[2] L. Wilson, N. Vaughn, and R. Krasny, \u201cA GPU-accelerated fast multipole method based on barycentric lagrange interpolation and dual tree traversal\u201d, Computer Physics Communications 265, 108017 (2021).", "occurrence_notes":null, "guid":"141926-21889641@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141926", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Applied Mathematics"], "website":"https:\/\/sites.google.com\/umich.edu\/umich-siamstudentchapter\/home", "sponsors":[ { "group_name":"Student AIM Seminar - Department of Mathematics", "group_id":"4902", "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":21889641 } , "138681-21883607": { "datetime_modified":"20251030T113156", "datetime_start":"20251119T170000", "datetime_end":"20251119T190000", "has_end_time":1, "date_start":"2025-11-19", "date_end":"2025-11-19", "time_start":"17:00:00", "time_end":"19:00:00", "time_zone":"America\/Detroit", "event_title":"2025 Global Photo Showcase", "occurrence_title":"2025 Global Photo Showcase", "combined_title":"2025 Global Photo Showcase: Global Photo Showcase", "event_subtitle":"Global Photo Showcase", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Join various U-M International Education units at the 2025 Global Photo Showcase, featuring student photography from all over the world! Vote for your favorite photos and enter raffles to win U-M prizes. Chat with study abroad returnees, international students, and international education professionals. Enjoy food and music from around the globe and learn about upcoming international opportunities!\r\n\r\n\r\nThis event is organized by the Center for Global & Intercultural Study, Global Engagement \u2014 Office of the Provost, the International Institute, International Programs in Engineering, Ross Global Initiatives, Global Public Health, and the International Center.", "occurrence_notes":null, "guid":"138681-21883607@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/138681", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"1010 Weiser Hall (10th Floor, 500 Church Street)", "has_livestream":0, "cost":"", "tags":["Multicultural","international center","International Week","international students","International","In Person","global engagement","global","Culture","Art","Visual Arts","Study Abroad","Sessions","photography"], "website":"https:\/\/sessions.studentlife.umich.edu\/p\/track\/14806", "sponsors":[ { "group_name":"Sessions @ Michigan", "group_id":"4791", "website":"https:\/\/sessions.studentlife.umich.edu\/" }, { "group_name":"International Center", "group_id":"1060", "website":"" }, { "group_name":"International Institute", "group_id":"1968", "website":"http:\/\/www.ii.umich.edu" }, { "group_name":"Center for Global and Intercultural Study", "group_id":"2726", "website":"http:\/\/www.lsa.umich.edu\/cgis" }, { "group_name":"International Programs in Engineering", "group_id":"3650", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/09\/event_138681_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/09\/event_138681_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/09\/event_138681_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/09\/event_138681_original-1.png", 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"time_zone":"America\/Detroit", "event_title":"Apple Cider and Study at Stockwell", "occurrence_title":"", "combined_title":"Apple Cider and Study at Stockwell", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"Join the Stockwell Diversity Peer Educators for a cup of warm apple cider while studying for finals!", "occurrence_notes":null, "guid":"140914-21887801@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/140914", "building_id":"1000064", "building_name":"Stockwell Hall", "campus_maps_id":"172", "room":"Rosa Parks Multicultural Lounge", "location_name":"Stockwell Hall", "has_livestream":0, "cost":"", "tags":["Michigan Housing","Study Night","free"], "website":"https:\/\/www.instagram.com\/umichhousing\/", "sponsors":[ { "group_name":"Michigan Housing Community Connections and Engagement", "group_id":"4577", "website":"" } ], 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There will be food, games, and conversation. All majors are welcome. This week's speaker is Managing Director of Transformation Enablement and Operations at KPMG US, Tiffany Hunt.\r\n\r\nThe Black Industrial Engineers (BIndx, pronounced BIND-ex) group is composed of IOE students and faculty who come together informally for meaningful conversations and fellowship to promote learning, mentoring, and networking. The BIndx program was initiated to promote a learning space where students feel comfortable engaging with faculty. BIndx meetings occur as informal monthly discussions to help form relationships between faculty and minoritized students. BIndx hosts a diverse group of guest speakers throughout the semester with a specific focus to facilitate conversations, build connections, and empower self-reflection.\r\n\r\nDinner will be served to those who RSVP", "occurrence_notes":null, "guid":"138601-21883432@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/138601", "building_id":"1000429", "building_name":"Industrial and Operations Engineering Building", "campus_maps_id":"73", "room":"2717", "location_name":"Industrial and Operations Engineering Building", "has_livestream":0, "cost":"", "tags":["Undergraduate Students","Graduate","Undergraduate","Michigan Engineering","Industrial And Operations Engineering","Graduate Students"], "website":"https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSexzRdikk6Sg2Dn_P6kiAHx5PwvZQkqHK41Jp9bqo_n8A-aOw\/viewform", "sponsors":[ { "group_name":"Industrial & Operations Engineering", "group_id":"3301", "website":"http:\/\/ioe.engin.umich.edu\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/09\/event_138601_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/09\/event_138601_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21883432 } , "141243-21888443": { "datetime_modified":"20251028T133928", "datetime_start":"20251119T170000", "datetime_end":"20251119T180000", "has_end_time":1, "date_start":"2025-11-19", "date_end":"2025-11-19", "time_start":"17:00:00", "time_end":"18:00:00", "time_zone":"America\/Detroit", "event_title":"ELI Course Info Session + Pizza Party!", "occurrence_title":"", "combined_title":"ELI Course Info Session + Pizza Party!", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"Want to build your confidence and fluency using English in class discussions, written assignments, and in conversations on campus?\r\nCome meet ELI\u2019s faculty to learn about ELI\u2019s Academic English Mini-Courses and enjoy some free pizza!\r\n\r\nTwo Options! 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