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DTSTAMP:20241027T165925
DTSTART;TZID=America/Detroit:20241101T150000
DTEND;TZID=America/Detroit:20241101T160000
SUMMARY:Workshop / Seminar:Student Algebraic Geometry: Frobenius Lifts
DESCRIPTION:In order to study algebraic varieties of positive characteristics\, it is sometimes fruitful to think about their lifts to characteristic 0 or infinitesimal lifts. For example\, in the work of Deligne and Illusie\, an infinitesimal liftability was a key ingredient for studying the degeneration of Hodge to de Rham spectral sequence. In this talk\, we will discuss a particular type of lifting of varieties where we also lift the Frobenius morphism. This “Frobenius lift” has quite strong cohomological consequences\, so we expect this to be rare. In fact\, a conjecture of Achinger\, Witaszek and Zdanowicz predicts that smooth projective varieties with Frobenius lifts are roughly built out of toric varieties and abelian varieties\, and we will illustrate this conjecture by examples.
UID:128353-21860718@events.umich.edu
URL:https://events.umich.edu/event/128353
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 2866
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20241018T103119
DTSTART;TZID=America/Detroit:20241101T150000
DTEND;TZID=America/Detroit:20241101T160000
SUMMARY:Workshop / Seminar:The Higgs category of a bordered surface\, after Merlin Christ (Combinatorics seminar)
DESCRIPTION:Labardini-Fragoso's classical construction allows to associate an ice quiver with potential to a bordered surface.  The corresponding Higgs category (in the sense of Yilin Wu) categorifies the cluster algebra (with non invertible boundary coefficients) associated to the surface by Fomin--Shapiro--Thurston. In recent work\, Merlin Christ has given a completely different description of this category as the \"1-periodic topological Fukaya category\". He obtains it by simplifying Haiden-Katzarkov-Kontsevich's construction of the topological Fukaya category associated with the surface. Our aim is to present Christ's construction and\, if time permits\, the ongoing project of extending it to cluster algebras appearing in higher Teichmuller theory.
UID:123015-21849958@events.umich.edu
URL:https://events.umich.edu/event/123015
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 4096
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250117T103736
DTSTART;TZID=America/Detroit:20241101T153000
DTEND;TZID=America/Detroit:20241101T170000
SUMMARY:Workshop / Seminar:Interdisciplinary Workshop in Race\, Ethnicity and Politics
DESCRIPTION:Racial and ethnic identities play a key role in shaping behaviors\, attitudes\, institutions and social structures. As such\, scholars across disciplines have been devoted to investigating how race and ethnicity feature in every aspect of social and political life. The purpose of I-REP (Interdisciplinary Workshop in Race\, Ethnicity and Politics) is to provide a space for scholars whose research centers race\, ethnicity and politics across a number of fields to receive critical feedback on the early stages of their work (especially graduate students)\, build community with other researchers who share similar interests and offer an opportunity for participants to collaborate on a joint research project within the working group.
UID:112497-21857418@events.umich.edu
URL:https://events.umich.edu/event/112497
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Department Of Political Science,Political Science
LOCATION:Haven Hall - 5769 Pre-Function
CONTACT:
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