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DTSTART;TZID=Europe/Berlin:20211105T133000
DTEND;TZID=Europe/Berlin:20211105T150000
DTSTAMP:20260601T085315
CREATED:20211029T111130Z
LAST-MODIFIED:20211102T152219Z
UID:1851-1636119000-1636124400@crc326gaus.de
SUMMARY:Georg Tamme (Universität Mainz): Purity in chromatically localized algebraic K-theory
DESCRIPTION:In classical algebra\, the prime fields are Q and for every prime number p the finite field F_p. In higher algebra\, one has for every prime number p an additional sequence of prime fields K(p\,n)\, n a natural number\, which in some sense interpolates between Q and F_p. Associated with these prime fields one has corresponding localization and completion functors. An interesting question\, raised by Waldhausen and Ausoni—Rognes\, is how these functors interact with algebraic K-theory. In the talk I will first give an introduction and discuss a purity result for algebraic K-theory with respect to these completion functors. This is based on joint work with Markus Land\, Akhil Mathew\, and Lennart Meier and on closely related work of Dustin Clausen\, Akhil Mathew\, Niko Naumann\, and Justin Noel.
URL:https://crc326gaus.de/event/georg-tamme-universitat-mainz-purity-in-chromatically-localized-algebraic-k-theory/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Christian Dahlhausen":MAILTO:cdahlhausen@mathi.uni-heidelberg.de
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20211110T160000
DTEND;TZID=Europe/Berlin:20211110T170000
DTSTAMP:20260601T085315
CREATED:20210917T162326Z
LAST-MODIFIED:20211014T163745Z
UID:1478-1636560000-1636563600@crc326gaus.de
SUMMARY:Yujie Xu
DESCRIPTION:Yujie Xu (Harvard University) \ntba
URL:https://crc326gaus.de/event/yujie-xu/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20211112T133000
DTEND;TZID=Europe/Berlin:20211112T150000
DTSTAMP:20260601T085315
CREATED:20211103T124233Z
LAST-MODIFIED:20211103T124233Z
UID:1885-1636723800-1636729200@crc326gaus.de
SUMMARY:Dr. Marcin Lara: Specialization for the pro-étale fundamental group and fundamental groups in rigid geometry
DESCRIPTION:The specialization morphism for the étale fundamental groups of Grothendieck cannot be generalized word-for-word to the more general pro-\’etale fundamental group of Bhatt and Scholze. \nIt turns out\, that one can deal with this problem by applying a rigid-geometric point of view: for a formal scheme X of finite type over a complete rank one valuation ring\, we construct a specialization morphism \nfrom the de Jong fundamental group of the rigid generic fiber to the pro-étale fundamental group of the special fiber.  The construction relies on an interplay between admissible blowups of X and normalizations of the irreducible components of X_k\, and employs the Berthelot tubes of these irreducible components in an essential way. \nI will also mention a generalization of the de Jong’s fundamental group. It is defined using a notion of “geometric arcs” in rigid geometry\, enjoys many good properties of the pro-étale fundamental group and allows to answer some old questions of de Jong. This is a joint work with Piotr Achinger and Alex Youcis.
URL:https://crc326gaus.de/event/dr-marcin-lara-specialization-for-the-pro-etale-fundamental-group-and-fundamental-groups-in-rigid-geometry/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20211118T141500
DTEND;TZID=Europe/Berlin:20211118T141500
DTSTAMP:20260601T085315
CREATED:20211112T150245Z
LAST-MODIFIED:20211112T151511Z
UID:1970-1637244900-1637244900@crc326gaus.de
SUMMARY:Kolloquium Geometrie und Arithmetik (Part 3)
DESCRIPTION:Thomas Nikolaus (Münster)\nSegal’s Burnside ring conjecture and a generalization for norms
URL:https://crc326gaus.de/event/kolloquium-geometrie-und-arithmetik-part-3/
LOCATION:Mainz\, Hilbertraum (05-432) and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20211126T133000
DTEND;TZID=Europe/Berlin:20211126T150000
DTSTAMP:20260601T085315
CREATED:20211119T105834Z
LAST-MODIFIED:20220208T091336Z
UID:2014-1637933400-1637938800@crc326gaus.de
SUMMARY:Exact verification of the strong BSD conjecture for some absolutely simple abelian surfaces
DESCRIPTION:
URL:https://crc326gaus.de/event/dr-timo-keller-exact-verification-of-the-strong-bsd-conjecture-for-some-absolutely-simple-abelian-surfaces/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
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