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DTSTART:20070311T020000
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BEGIN:VEVENT
DTSTAMP:20251029T140420
DTSTART;TZID=America/Detroit:20251031T150000
DTEND;TZID=America/Detroit:20251031T160000
SUMMARY:Workshop / Seminar:Determinants of tree distance matrices and submatrices (Combinatorics seminar)
DESCRIPTION:Suppose D is the distance matrix of a tree. Graham and Pollack showed that the determinant of D satisfies an identity that depends only on surprisingly little information of the given tree. I will explain how this identity generalizes to a combinatorial expression for the determinant of any principal submatrix of D. This new identity involves counts of spanning forests and is proved by use of potential-theoretic concepts on graphs. This generalizes further to a determinant identity for effective resistance matrices on an arbitrary finite graph. I will mention a connection to the ultra-log-concave version of Mason's conjecture\, and a strengthening for the graphic case.\n\nThis is joint work with Farbod Shokrieh and Chenxi Wu. https://arxiv.org/abs/2411.11488
UID:138702-21883638@events.umich.edu
URL:https://events.umich.edu/event/138702
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4096
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20251030T100053
DTSTART;TZID=America/Detroit:20251031T150000
DTEND;TZID=America/Detroit:20251031T160000
SUMMARY:Lecture / Discussion:HET Seminar | Huge Operators in AdS/CFT and Matrix Models
DESCRIPTION:Tbd
UID:137252-21879996@events.umich.edu
URL:https://events.umich.edu/event/137252
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:High Energy Theory Seminar,Lecture,Physics,Science
LOCATION:West Hall - 340
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20251027T003921
DTSTART;TZID=America/Detroit:20251031T150000
DTEND;TZID=America/Detroit:20251031T160000
SUMMARY:Workshop / Seminar:Singular Cohomology of Singular Hypersurfaces
DESCRIPTION:TBD
UID:141168-21888277@events.umich.edu
URL:https://events.umich.edu/event/141168
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 2866
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20260105T110419
DTSTART;TZID=America/Detroit:20251031T150000
DTEND;TZID=America/Detroit:20251031T160000
SUMMARY:Social / Informal Gathering:Sustainability Coffee Chats: Free coffee and good conversation!
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! Not to mention: WE WILL BUY YOUR DRINK!\n\nFind us at: \nMaizes Cafe every Friday from 3-4p and Rooting for Change Cafe (3rd Floor Palmer Commons) every other Wednesday from 5-6p
UID:138091-21881930@events.umich.edu
URL:https://events.umich.edu/event/138091
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Activism,Climate Change,Discussion,Food,food and the environment,Free,Free Food,Graduate and Professional Students,In Person,Social,Social Impact,Student Org,Sustainability,Talk,Undergraduate Students
LOCATION:Michigan League - Maizie's Cafe
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20251024T102441
DTSTART;TZID=America/Detroit:20251031T153000
DTEND;TZID=America/Detroit:20251031T163000
SUMMARY:Lecture / Discussion:Smith Lecture: Emily Troyer
DESCRIPTION:The fossil record offers unique insights into evolutionary patterns that cannot be inferred from living species alone. Fossils provide a critical temporal element to macroevolutionary studies\, allowing us to strengthen phylogenetic inferences\, document morphological change through time\, and directly calibrate divergence events. My past research lies at the intersection of phylogeny\, phenotype\, and time\, relying extensively on fossil specimens to detect patterns of morphological change over deep time. In one study\, using tetraodontiform fishes (pufferfishes and relatives) as a model system\, I combined phylogenomic data\, paleoclimatic records\, and body size measurements from living and fossil species to test long-standing macroevolutionary hypotheses of body size evolution. These analyses revealed that increasing body size correlates with cooling ocean temperatures through time\, providing strong support for both Bergmann’s and Cope’s rules in marine fishes. In another study\, I used 3D morphological data from exceptionally preserved fossil jaws of early bony fishes (423–359 Ma) to uncover an adaptive radiation that was driven primarily by lungfishes and coelacanths\, standing in contrast to their “living fossil” descendants of today. Together\, these studies highlight how fossils capture often unseen evolutionary dynamics and underscore the importance of paleontological data for understanding evolutionary diversification.
UID:141083-21888115@events.umich.edu
URL:https://events.umich.edu/event/141083
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Earth And Environmental Sciences
LOCATION:1100 North University Building - 1528
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20251003T121514
DTSTART;TZID=America/Detroit:20251031T160000
DTEND;TZID=America/Detroit:20251031T170000
SUMMARY:Workshop / Seminar:Algebraic Geometry Learning Seminar: Decomposition theorems
DESCRIPTION:Explain the decomposition theorems for F-bundles.
UID:139280-21885229@events.umich.edu
URL:https://events.umich.edu/event/139280
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall
CONTACT:
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