{ "151162-21910993": { "datetime_modified":"20261026T085513", "datetime_start":"20261113T150000", "datetime_end":"20261113T160000", "has_end_time":1, "date_start":"2026-11-13", "date_end":"2026-11-13", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"HET Seminar | Euclidean Wormholes and Axion Cosmology", "occurrence_title":"", "combined_title":"HET Seminar | Euclidean Wormholes and Axion Cosmology: Gary Shiu (Wisconsin)", "event_subtitle":"Gary Shiu (Wisconsin)", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Axions arise ubiquitously in theories of particle physics and quantum gravity and may play important roles in cosmology, from inflation and dark matter to dark energy. This raises a basic question: does quantum gravity constrain the allowed parameter space of axions, and can such constraints have observable consequences? I will discuss how Euclidean wormholes provide a surprising connection between these questions and quantum gravity. I will first review the axionic Weak Gravity Conjecture (aWGC), including the importance of its order-one coefficient for axion phenomenology, and then describe how Euclidean wormholes may give rise to this bound. I will discuss the perturbative stability of axion wormholes and their explicit realization in string theory, both in flat space and in AdS. Finally, I will present recent work showing that the aWGC can arise directly from the nonperturbative fragmentation of Euclidean wormholes into charged defects. Requiring such fragmentation to lower the Euclidean action fixes the action-to-charge bound and its order-one coefficient, and reveals a direct connection to the Imaginary Distance Bound. This suggests that quantum-gravitational constraints on axions can be understood as conditions on the non-perturbative stability of gravitational saddles, with implications for axion cosmology and the consistency of effective field theories.", "occurrence_notes":null, "guid":"151162-21910993@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151162", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"340", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["High Energy Theory Seminar","Lecture","Physics","Science","Seminar","Talk"], "website":"", "sponsors":[ { "group_name":"Leinweber Institute for Theoretical Physics", "group_id":"4286", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "website":"" }, { "group_name":"HET Seminars", "group_id":"3806", "website":"" }, { "group_name":"Leinweber Institute for Theoretical Physics Seminars", "group_id":"4311", "website":"" }, { "group_name":"Leinweber Institute for Theoretical Physics High Energy Theory Seminars", "group_id":"4313", "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":21910993 } , "148332-21903936": { "datetime_modified":"20261020T144533", "datetime_start":"20261113T150000", "datetime_end":"20261113T163000", "has_end_time":1, "date_start":"2026-11-13", "date_end":"2026-11-13", "time_start":"15:00:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"Incorporations: Capitalism and Collective Life with Associate Professor Matthew Hull", "occurrence_title":"", "combined_title":"Incorporations: Capitalism and Collective Life with Associate Professor Matthew Hull: U-M Anthropology 2026 Roy A. Rappaport Lecture Series", "event_subtitle":"U-M Anthropology 2026 Roy A. Rappaport Lecture Series", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Join the U-M Department of Anthropology for the annual Roy A. Rappaport Lecture Series! Associate Professor Matthew Hull will present the fall 2026 series, titled \u201cIncorporations: Capitalism and Collective Life.\u201d\n\nAbstract: \u201cCorporations are often seen as purely economic actors, but they have been central to Anglo-American governance for centuries\u2014pioneers of democratic assembly, speech, citizenship, and constitutions. Many features of corporations, once grounded in democratic ideals, now foster the unresponsiveness of these institutions. These lectures will include discussion of a diverse array of corporations: medieval guilds, the English East India Company, Alaska Native corporations, and caste-based corporations in India.\u201d\n\nRappaport lectures will take place on the following fall Fridays from 3 to 4:30 p.m. in West Hall Room 411. They are free and open to the public:\n\nFriday, Sept. 25\n\u201cCorporate Persons in Human Law: Reproduction, Kinship, Jurisdiction\u201d\n\nFriday, Oct. 23\n\u201cFreedom and Citizenship: Corporate Membership and the Making of Exclusion\u201d\n\nFriday, Nov. 13\n\u201cMeetings and Speech: Corporate Mediations of Will\u201d\n\nFriday, Dec. 4\n\u201cSharing and Inequality in Corporations\u201d\n\nVIRTUAL PARTICIPATION LINK: https:\/\/umich.zoom.us\/j\/91475190155\n\nREGISTRATION IS APPRECIATED for planning purposes: https:\/\/myumi.ch\/e77Ax\n\nIf you need accommodations to attend, please email anthro.exec.secretary@umich.edu.\n\nABOUT ASSOCIATE PROFESSOR MATTHEW HULL\nMatthew Hull is Associate Professor of Anthropology at the University of Michigan. His research focuses on the nexus of signification, technology, and institutions. His book, \u201cGovernment of Paper: The Materiality of Bureaucracy in Urban Pakistan,\u201d winner of the 2019 J.I. Staley Prize from the School of Advanced Research, examines governance as a semiotic and material practice. He has worked on urban planning in 1960s India and police communication systems and lotteries in contemporary India. He is currently writing a book on how early modern corporations shaped democratic governance and continue to structure contemporary political life.", "occurrence_notes":null, "guid":"148332-21903936@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148332", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["AEM Featured","Anthropology","Lecture","South Asian Studies"], "website":"https:\/\/lsa.umich.edu\/anthro", "sponsors":[ { "group_name":"Department of Anthropology", "group_id":"3469", "website":"https:\/\/lsa.umich.edu\/anthro" }, { "group_name":"Center for South Asian Studies", "group_id":"3273", "website":"http:\/\/www.ii.umich.edu\/csas" }, { "group_name":"Museum of Anthropological Archaeology", "group_id":"3760", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/08\/event_148332_original-2.png", "styled_images":{ 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Showcase (Weiser Hall 10th floor)\n\nFeel free to register for one or both of these events to join us in celebrating study abroad, international internships, and international students here at the University of Michigan. :)\n\nThese events are 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, and the International Center.", "occurrence_notes":null, "guid":"149937-21907398@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149937", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"George Washington Park Rock (Corner of Hill Street & Washtenaw)", "has_livestream":0, "cost":"", "tags":["Abroad","All Majors Welcome","Art","Community","Exhibition","global engagement","Graduate Students","international","international center","International Education","International Education 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Familiar examples include moving sums, maxima, and filters, but the same basic problem also appears in more general windowed recurrences. In this talk, we show that a large class of such calculations admits a common algebraic formulation. In the associative setting, moving window calculations can be recast as exponentiation in a semidirect product, bringing efficient powering algorithms to bear. In more general settings, semi-associativity provides the right framework for representing compositions of updates and understanding when efficient computation is still possible. This point of view not only unifies a broad family of examples, but also leads naturally to compact vectorized implementations, making the methods well suited to modern GPU architectures. This is joint work with David Maslen.", "occurrence_notes":null, "guid":"149671-21906924@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149671", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"4088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Combinatorics Seminar - Department of Mathematics", "group_id":"4885", "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":21906924 } , "141325-21912815": { "datetime_modified":"20260914T101215", "datetime_start":"20261113T150000", "datetime_end":"20261113T154500", "has_end_time":1, "date_start":"2026-11-13", "date_end":"2026-11-13", "time_start":"15:00:00", "time_end":"15:45:00", "time_zone":"America\/Detroit", "event_title":"Sky Tonight", "occurrence_title":"", "combined_title":"Sky Tonight", "event_subtitle":"", "event_type":"Film Screening", "event_type_id":"11", "description":"A live presentation on what to find in the sky tonight and for the coming few weeks. This presentation includes how to find the cardinal directions with the North Star, current and upcoming constellations, visible planets, a few deep sky objects depending on the season, and other interesting astronomical visualizations. If you want to be able to look up from your own backyard and know what to look for, this is the show for you.", "occurrence_notes":null, "guid":"141325-21912815@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/141325", "building_id":"1005169", "building_name":"Museum of Natural History", "campus_maps_id":"646", "room":"Planetarium & Dome Theater", "location_name":"Museum of Natural History", "has_livestream":0, "cost":"Tickets are $9 and are available in the museum store on the day of the show.", "tags":["Astronomy","Children","Family","Film","Museum","museums","natural history museum","Natural Sciences","Planetarium","Prospective Undergraduate Students","Science","Space","Undergraduate"], "website":"https:\/\/lsa.umich.edu\/ummnh\/visitors\/planetarium-dome-theater.html#view=week", "sponsors":[ { "group_name":"Planetarium & Dome Theater at the Museum of Natural History", "group_id":"3825", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/10\/event_141325_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/10\/event_141325_original-1.jpg" }, "occurrence_count":48, "first_occurrence":21912812 } , "150647-21909755": { "datetime_modified":"20261012T122524", "datetime_start":"20261113T150000", "datetime_end":"20261113T160000", "has_end_time":1, "date_start":"2026-11-13", "date_end":"2026-11-13", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Steffy Lecture: Irina Dolinskaya, NSF", "occurrence_title":"", "combined_title":"Steffy Lecture: Irina Dolinskaya, NSF: From Michigan to National Impact: An Engineer\u2019s Journey of Leadership, Innovation, and Service", "event_subtitle":"From Michigan to National Impact: An Engineer\u2019s Journey of Leadership, Innovation, and Service", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Abstract\nLooking back on my professional journey, I am struck by how much of it was shaped by people, opportunities, and experiences I could not have anticipated as a student at the University of Michigan.\n\nIn this talk, I will reflect on my journey from the University of Michigan\u2019s Industrial and Operations Engineering program to my current role as a Directorate Head at the National Science Foundation, and how my Michigan education prepared me for the opportunities and challenges along the way. I will share lessons learned about\nleadership, collaboration, resilience, and the importance of remaining open to unexpected opportunities.\n\nI hope to encourage students to build a strong foundation, stay curious, embrace opportunities, and recognize that a meaningful career does not always follow a predictable path.\n\nBiography \nDr. Irina Dolinskaya is the Directorate Head for Computer and Information Science and Engineering at the U.S. National Science Foundation (NSF). Previously, she served as Deputy Division Director and Program Director at NSF and as a faculty member in Industrial Engineering and Management Sciences at Northwestern University.\n\nA proud Michigan alumna, Dr. Dolinskaya earned her M.S. and Ph.D. in Industrial and Operations Engineering from the University of Michigan and her B.S. in Industrial Engineering from the University of Florida. Her research focuses on transportation science and logistics, including humanitarian logistics, vessel performance, and electric vehicle routing. She credits her education at Michigan as an important foundation for her academic and professional journey.", "occurrence_notes":null, "guid":"150647-21909755@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/150647", "building_id":"1000397", "building_name":"Lurie Robert H. Engin. Ctr", "campus_maps_id":"90", "room":"GM Room", "location_name":"Lurie Robert H. Engin. 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Indeed, just as M_{1,1} = A_1 is the quotient H\/SL_2(Z), one can show that A_g, the space of principally polarized abelian varieties of dimension g, is isomorphic to H_g\/Sp_{2g}(Z). More generally, one can consider spaces H_g\/Gamma for any arithmetic subgroup Gamma in Sp_{2g}(Q). Unlike M_g, which admits the canonical Deligne-Mumford compactification, these spaces admit many natural compactifications with different geometric properties. In this talk, we introduce H_g\/Gamma, the Siegel modular varieties, and discuss various compactifications such as the Baily\u2013Borel compactification and toroidal compactifications. We then focus on the specific case of g = 2 to showcase the beautiful arithmetic that occurs even in this small case.", "occurrence_notes":null, "guid":"154655-21918147@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/154655", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"2866", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Student Algebraic Geometry Seminar - Department of Mathematics", "group_id":"4904", "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":21918147 } }