{ "150328-21909020": { "datetime_modified":"20260817T144314", "datetime_start":"20260911T150000", "datetime_end":"20260911T160000", "has_end_time":1, "date_start":"2026-09-11", "date_end":"2026-09-11", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"NERS Colloquium: Departmental Welcome", "occurrence_title":"", "combined_title":"NERS Colloquium: Departmental Welcome: Xiaodong Sun, Interim Chair, U-M Nuclear Engineering & Radiological Sciences", "event_subtitle":"Xiaodong Sun, Interim Chair, U-M Nuclear Engineering & Radiological Sciences", "event_type":"Presentation", "event_type_id":"16", "description":"Xiaodong Sun, NERS interim chair and professor, will welcome the NERS community back for the 2026-27 academic year, sharing departmental updates, successes, priorities, and a look at what\u2019s ahead for NERS.", "occurrence_notes":null, "guid":"150328-21909020@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/150328", "building_id":"1000403", "building_name":"Cooley Building", "campus_maps_id":"42", "room":"Baer Room (2906 Cooley)", "location_name":"Cooley Building", "has_livestream":0, "cost":"", "tags":["Colloquia","Nuclear","Nuclear Engineering and Radiological Sciences","Orientation"], "website":"", "sponsors":[ { "group_name":"Nuclear Engineering & Radiological Sciences", "group_id":"4000", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/08\/event_150328_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2026\/08\/event_150328_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21909020 } , "148873-21905035": { "datetime_modified":"20260810T205616", "datetime_start":"20260911T150000", "datetime_end":"20260911T160000", "has_end_time":1, "date_start":"2026-09-11", "date_end":"2026-09-11", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Pseudo-magnetism in a strained discrete honeycomb lattice", "occurrence_title":"", "combined_title":"Pseudo-magnetism in a strained discrete honeycomb lattice: Xuenan Li (Mathematics, Purdue University)", "event_subtitle":"Xuenan Li (Mathematics, Purdue University)", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Abstract: Slowly-varying nonuniform strain in honeycomb media can generate an effective pseudo-magnetic field, even though the underlying medium is non-magnetic. This phenomenon was first discovered in graphene and later in photonic crystals, and other physical settings. In this talk, I will start from a discrete nearest-neighbor tight-binding model for a nonuniformly strained honeycomb medium. I will then show how this model leads to a continuum magnetic Dirac Hamiltonian that describes wave packets concentrated near a Dirac point of the undeformed structure. I will focus on unidirectional deformations with bounded gradients that preserve translation invariance along the armchair direction. In this setting, we prove the existence of eigenmodes that behave like plane waves along the armchair direction and are strongly localized in the transverse direction, together with quantitative correction estimates. These results apply to deformations that produce an approximately constant pseudo-magnetic field perpendicular to the plane. They also lead to nearly flat bands and, as a consequence, a very high density of states. These analytical results are also supported by numerical simulations of the corresponding deformations. This is joint work with Michael I. Weinstein.\n\nContact: Ian Tobasco", "occurrence_notes":null, "guid":"148873-21905035@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/148873", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"1084", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Applied Mathematics","Mathematics"], "website":"", "sponsors":[ { "group_name":"Applied Interdisciplinary Mathematics (AIM) Seminar - Department of Mathematics", "group_id":"4882", "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":21905035 } , "151678-21911940": { "datetime_modified":"20260908T002719", "datetime_start":"20260911T150000", "datetime_end":"20260911T160000", "has_end_time":1, "date_start":"2026-09-11", "date_end":"2026-09-11", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Student Algebraic Geometry: Reconstruction Theorems", "occurrence_title":"", "combined_title":"Student Algebraic Geometry: Reconstruction Theorems: Ritwick Bhargava", "event_subtitle":"Ritwick Bhargava", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Gabriel's reconstruction theorem states that a noetherian scheme can be fully recovered from its abelian category of quasi-coherent sheaves. This motivates noncommutative algebraic geometry, which advocates viewing any abelian category as a category of sheaves on a \"noncommutative space\". I will sketch two approaches to the proof and discuss extensions to the derived and stacky settings.", "occurrence_notes":null, "guid":"151678-21911940@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151678", "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":21911940 } , "138091-21908258": { "datetime_modified":"20260812T103351", "datetime_start":"20260911T150000", "datetime_end":"20260911T160000", "has_end_time":1, "date_start":"2026-09-11", "date_end":"2026-09-11", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"Sustainability Coffee Chats: Free coffee and good conversation!", "occurrence_title":"", "combined_title":"Sustainability Coffee Chats: Free coffee and good conversation!", "event_subtitle":"", "event_type":"Social \/ Informal Gathering", "event_type_id":"19", "description":"The Student Sustainability Coalition will be hosting our coffee chats throughout the semester and we want you to join us! Passionate about sustainability?--water conservation, AI, carbon neutrality, transportation, ANYTHING!--come chat with us, share your passion(s) and interests, all while helping contribute to a more sustainable University of Michigan! 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