{ "144705-21895749": { "datetime_modified":"20260128T142809", "datetime_start":"20260204T143000", "datetime_end":"20260204T153000", "has_end_time":1, "date_start":"2026-02-04", "date_end":"2026-02-04", "time_start":"14:30:00", "time_end":"15:30:00", "time_zone":"America\/Detroit", "event_title":"Student Number Theory: Stable conjugacy and transfer of tori", "occurrence_title":"", "combined_title":"Student Number Theory: Stable conjugacy and transfer of tori: Kaya Lakein", "event_subtitle":"Kaya Lakein", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"If G is a connected reductive linear algebraic group defined over F, a non-Archimedean local field, then all of its maximal tori are conjugate over the separable closure of F. But when are two maximal tori of G rationally conjugate, i.e. conjugate by an element of G(F)? Are there circumstances under which we say what it means for maximal tori in two different groups to be conjugate? In this talk, we will endeavor to answer these and some related questions. Along the way, we will go over a small example in detail, and we will review some properties of Galois cohomology as well as the notion of what it means for two connected reductive groups to be inner twists of each other.", "occurrence_notes":null, "guid":"144705-21895749@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/144705", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"Student Number Theory Seminar - Department of Mathematics", "group_id":"4906", "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":21895749 } , "144218-21894877": { "datetime_modified":"20260202T095545", "datetime_start":"20260204T150000", "datetime_end":"20260204T160000", "has_end_time":1, "date_start":"2026-02-04", "date_end":"2026-02-04", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Department Colloquium | Supersonic Currents to Cavity-Altered Superconductors", "occurrence_title":"", "combined_title":"Department Colloquium | Supersonic Currents to Cavity-Altered Superconductors: Abhay Narayan Pasupathy (Columbia University)", "event_subtitle":"Abhay Narayan Pasupathy (Columbia University)", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"I will discuss the use of scan probe microscopy to gain microscopic insight into two separate quantum phenomena in solids.\n\nIn the first experiment, we explore how electrons in ultra-clean solids can behave as a viscous fluid, enabling transport far from the textbook ohmic or ballistic regimes. I will discuss a bilayer-graphene electronic de Laval nozzle that accelerates carriers to supersonic speeds, producing a viscous electron shock. Discontinuities in transport and local potential flattening observed by Kelvin probe microscopy are consistent with a compressible, hydrodynamic flow that breaks the electronic sound barrier, opening a path to intrinsically nonlinear devices that exploit shocks.\n\nIn the second experiment, I will discuss how we can affect superconductivity by engineering a material\u2019s electromagnetic environment. Using a \u201cdark\u201d hyperbolic cavity formed by hexagonal boron nitride interfaced with the molecular superconductor \u03ba-(BEDT-TTF)\u2082Cu[N(CN)\u2082]Br (\u03ba-ET), we realize resonant coupling between hBN hyperbolic modes and a molecular vibration implicated in pairing. We use magnetic-force microscopy to detect the Meissner response at the interface of the two materials. We observe a marked suppression of superfluid density at the interface\u2014an effect absent in non-resonant controls.\n\nBio: Abhay Pasupathy is a professor in the physics department at Columbia University (since 2009), and is also a group leader in the Condensed Matter and Materials Science Division at Brookhaven National Laboratory (since 2020). His research interests are in understanding the emergent properties of quantum materials, using microscopic and spectroscopic tools such as the scanning tunneling microscope, the atomic force microscope and angle resolved photoemission.", "occurrence_notes":null, "guid":"144218-21894877@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/144218", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"340", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["Physics","Science"], "website":"", "sponsors":[ { "group_name":"Department Colloquia", "group_id":"3804", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "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":21894877 } , "144503-21895433": { "datetime_modified":"20260126T113018", "datetime_start":"20260204T150000", "datetime_end":"20260204T160000", "has_end_time":1, "date_start":"2026-02-04", "date_end":"2026-02-04", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Glassware Painting Social Event", "occurrence_title":"", "combined_title":"Glassware Painting Social Event", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"QueST and Centerspace are groups focused on queer community in the sciences. Our events are open to everyone. This is a social painting event using recycled glassware (or small canvases if preferred). There will be light drinks\/snacks.\n\nhttps:\/\/linktr.ee\/quest_uofm", "occurrence_notes":null, "guid":"144503-21895433@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/144503", "building_id":"1005169", "building_name":"Biological Sciences Building", "campus_maps_id":"631", "room":"3150", "location_name":"Biological Sciences Building", "has_livestream":0, "cost":"", "tags":["Well-being","Undergraduate","Science","Research","Postdoctoral Research Fellows","LGBT","Graduate Students","Biosciences","Art"], "website":"https:\/\/linktr.ee\/quest_uofm", "sponsors":[ { "group_name":"Queer ScientisTs", "group_id":"5085", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/01\/event_144503_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/01\/event_144503_original-1.png", 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"time_zone":"America\/Detroit", "event_title":"LGBTea", "occurrence_title":"", "combined_title":"LGBTea: Winter 2026", "event_subtitle":"Winter 2026", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"Sip, spill, or just chill\u2014we're taking a break! Bookmark your spot, close that laptop, and join us at Spectrum Center for some LGBTea. Relax with some tabletop and Switch games, activities, community, and more. Then leave recharged and ready to take on the rest of your day. Your body and mind will thank you later.\n\n- February 4, 3:00-4:30 pm, Spectrum Center\n- March 10, 12:00-2:00 pm, Trotter Multicultural Center [LGBTea x CommuniTea]\n- April 22, 3:00-4:30 pm, Spectrum Center x GILE x UCC\n\nMORE SPECTRUM CENTER EVENTS\nhttps:\/\/spectrumcenter.umich.edu\/events", "occurrence_notes":null, "guid":"142547-21891140@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/142547", "building_id":"1000120", "building_name":"Michigan Union", "campus_maps_id":"191", "room":"Spectrum Center (3020)", "location_name":"Michigan Union", "has_livestream":0, "cost":"", "tags":["LGBT"], "website":"https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSeo2F9s89ufGUl0vd5fzgWIgPV_JpV33rBo4L3_SFDOwm5iGw\/viewform", "sponsors":[ { "group_name":"Spectrum Center", "group_id":"1030", "website":"http:\/\/spectrumcenter.umich.edu" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/12\/event_142547_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/12\/event_142547_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2025\/12\/event_142547_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2025\/12\/event_142547_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2025\/12\/event_142547_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2025\/12\/event_142547_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/12\/event_142547_original-1.png" }, "occurrence_count":3, "first_occurrence":21891140 } , "144885-21896093": { "datetime_modified":"20260201T124318", "datetime_start":"20260204T150000", "datetime_end":"20260204T160000", "has_end_time":1, "date_start":"2026-02-04", "date_end":"2026-02-04", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Student DGT: We Need to Talk About Spectra", "occurrence_title":"", "combined_title":"Student DGT: We Need to Talk About Spectra: Ajay Srinivasan", "event_subtitle":"Ajay Srinivasan", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Stable homotopy theory has its origins with Freudenthal, who observed that the homotopy groups of spheres exhibit stable behavior under suspension. Stable phenomena had appeared earlier, in examples like singular cohomology. But through later developments that used generalized cohomology theories to reduce deep geometrical problems to computations in stable homotopy (like K-theory, or Thom\u2019s work on cobordism), the subject established its centrality. There was a need for a topological setting in which stable phenomena could be systematically studied.\nIn this talk, I will introduce the stable homotopy category from two complementary points of view. First, I will describe how attempts to stabilize the homotopy category of spaces naturally lead to spectra, using the sphere spectrum as a guiding example. Second, I will explain how spectra arise more importantly as representing objects for generalized cohomology theories, beginning with singular cohomology and K-theory.\n\nI hope to place emphasis on building intuition from concrete examples rather than formal foundations. I will also briefly indicate why one is led to consider structured models of spectra (like S-modules) and symmetric monoidal categories of spectra\u2014and, if time permits, say a few words about highly structured ring spectra and E\u221e-rings.", "occurrence_notes":null, "guid":"144885-21896093@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/144885", "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":21896093 } , "143085-21892041": { "datetime_modified":"20251223T102619", "datetime_start":"20260204T151000", "datetime_end":"20260204T161000", "has_end_time":1, "date_start":"2026-02-04", "date_end":"2026-02-04", "time_start":"15:10:00", "time_end":"16:10:00", "time_zone":"America\/Detroit", "event_title":"MIPSE Seminar | Plasma and Gas Optics for Ultra-Intense Lasers", "occurrence_title":"", "combined_title":"MIPSE Seminar | Plasma and Gas Optics for Ultra-Intense Lasers: Prof. Matthew Edwards, Stanford University", "event_subtitle":"Prof. Matthew Edwards, Stanford University", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"MIPSE Early Career Award 2025-2026\r\n\r\nAbstract: \r\nOur ability to build lasers of higher peak power into higher-intensity regimes of laser science is fundamentally limited by the optical damage thresholds of the dielectric coatings, glass, and metal that make up modern optics. Although we would like to have lasers capable of probing Schwinger-limit fields or accelerating large plasma volumes to relativistic speeds, current laser technology cannot be scaled much beyond the ten-petawatt level without prohibitive cost. Plasma physics offers a solution: plasma can tolerate light intensities far beyond the damage thresholds of solid-state optics. In principle, the use of plasmas as optics allows the construction of compact ultra-high-power lasers, but a range of plasma physics and engineering problems must first be solved. We will discuss how gases and plasmas can be shaped into precision optics suitable for our most powerful and energetic lasers, providing ultra-high damage thresholds and resistance to the neutron and debris fluxes that would be present in an inertial fusion plant. We will show experimental, computational, and analytic results on the performance of gas and plasma diffraction gratings and lenses, including demonstrations of efficiency and stability comparable to standard solid-state optics. We will then discuss designs for plasma-based laser systems and how plasma optics could enable compact lasers with multi-petawatt to exawatt peak powers.\r\n\r\nAbout the Speaker: \r\nMatthew Edwards is an Assistant Professor of Mechanical Engineering at Stanford University. He received BSE, MA, and PhD degrees from Princeton University in Mechanical and Aerospace Engineering. From 2019 to 2022 he was a Lawrence Fellow in the National Ignition Facility and Photon Science Directorate at Lawrence Livermore National Laboratory. His research applies high-power lasers to the development of optical diagnostics for fluids and plasmas, the study of intense light-matter interactions, and the construction of compact light and particle sources, combining adaptive high-repetition-rate experiments and large-scale simulations to explore new regimes in fluid mechanics, thermodynamics, materials science, and plasma physics.\r\n\r\nThis seminar is free and open to the public. 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