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X-ORIGINAL-URL:https://crc326gaus.de
X-WR-CALDESC:Events for CRC 326 - GAUS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220112T093000
DTEND;TZID=Europe/Berlin:20220112T110000
DTSTAMP:20260412T153118
CREATED:20211102T151437Z
LAST-MODIFIED:20211124T140105Z
UID:1870-1641979800-1641985200@crc326gaus.de
SUMMARY:Comparison with étale cohomology and finiteness in dimension
DESCRIPTION:Christian Dahlhausen
URL:https://crc326gaus.de/event/comparison-with-etale-cohomology-and-finiteness-in-dimension/
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220112T160000
DTEND;TZID=Europe/Berlin:20220112T170000
DTSTAMP:20260412T153118
CREATED:20211209T150022Z
LAST-MODIFIED:20220201T130829Z
UID:2114-1642003200-1642006800@crc326gaus.de
SUMMARY:Oishee Banerjee: Filtration of cohomology via symmetric (semi-)simplicial spaces
DESCRIPTION:Oberseminar Algebra und Geometrie \nTalk by Oishee Banerjee (University of Bonn) \nFiltration of cohomology via symmetric (semi-)simplicial spaces \nAbstract: Inspired by Deligne’s use of the simplicial theory of hypercoverings in defining mixed Hodge structures we replace the indexing category ∆ by the symmetric simplicial category ∆S and study (a class of) ∆S-hypercoverings\, which we call spaces admitting symmetric (semi)simplicial filtration. For ∆S-hypercoverings we construct a spectral sequence\, somewhat like the Cˇech-to-derived category spectral sequence. The advantage of working on ∆S is that all of the combinatorial com- plexities that come with working on ∆ are bypassed\, giving simpler\, unified proof of known results like the computation of (in some cases\, stable) singular cohomol- ogy (with rational coefficients) and étale cohomology (with Q_l coefficients) of the moduli space of degree n maps C to a projective space \, C a smooth projective curve of genus g\, of unordered configuration spaces\, that of the moduli space of smooth sections of a fixed gdr that is m-very ample etc.
URL:https://crc326gaus.de/event/oishee-banerjee/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Annette Werner":MAILTO:werner[at]math.uni-frankfurt.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220114T133000
DTEND;TZID=Europe/Berlin:20220114T150000
DTSTAMP:20260412T153118
CREATED:20211130T091839Z
LAST-MODIFIED:20220208T090213Z
UID:2032-1642167000-1642172400@crc326gaus.de
SUMMARY:Topological Hochschild homology and Zeta-values
DESCRIPTION:
URL:https://crc326gaus.de/event/dr-baptiste-morin-tba/
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220119T093000
DTEND;TZID=Europe/Berlin:20220119T110000
DTSTAMP:20260412T153118
CREATED:20211102T151554Z
LAST-MODIFIED:20211124T140148Z
UID:1872-1642584600-1642590000@crc326gaus.de
SUMMARY:Joins of Henselian Huber pairs (Part 1)
DESCRIPTION:M. Amine Koubaa
URL:https://crc326gaus.de/event/joins-of-henselian-huber-pairs-part-1/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 4\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220120T150000
DTEND;TZID=Europe/Berlin:20220120T180000
DTSTAMP:20260412T153118
CREATED:20211027T142210Z
LAST-MODIFIED:20220201T130853Z
UID:1824-1642690800-1642701600@crc326gaus.de
SUMMARY:Hodge theory of matroids (Session 5)
DESCRIPTION:This semester’s topic in our joint research seminar is Hodge theory of matroids. The meetings take place on Zoom on a bi-weekly basis during lecture time\, Thursdays 15-18.\nTalk 9: Bergman fans and the permutohedral variety (Stefan Rettenmayr)\nTalk 10: Intersection theory on the permutohedral variety (Andreas Gross)
URL:https://crc326gaus.de/event/hodge-theory-of-matroids-session-5/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220121T133000
DTEND;TZID=Europe/Berlin:20220121T150000
DTSTAMP:20260412T153118
CREATED:20211216T093503Z
LAST-MODIFIED:20220208T085247Z
UID:2132-1642771800-1642777200@crc326gaus.de
SUMMARY:Higher Hida theory and p-adic L-functions for Hilbert modular forms
DESCRIPTION:
URL:https://crc326gaus.de/event/dr-giada-grossi-higher-hida-theory-and-p-adic-l-functions-for-hilbert-modular-forms/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Peter Gr%C3%A4f":MAILTO:peter.graef iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220121T140000
DTEND;TZID=Europe/Berlin:20220121T150000
DTSTAMP:20260412T153118
CREATED:20220601T071512Z
LAST-MODIFIED:20220601T072015Z
UID:3090-1642773600-1642777200@crc326gaus.de
SUMMARY:Orders and polytropes: matrices from valuations
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (First meeting Winter Semester 2021/22) \n14:00-15:00 Mima Stanojkovski (RWTH Aachen) \nAbstract:\nLet K be a discretely valued field with ring of integers R. To a d-by-d matrix M with integral coefficients one can associate an R-module\, in K^{d x d}\, and a polytope\, in the Euclidean space of dimension d-1. We will look at the interplay between these two objects\, from the point of view of tropical geometry and building on work of Plesken and Zassenhaus. This is joint work with Y. El Maazouz\, M. A. Hahn\, G. Nebe\, and B. Sturmfels. \n 
URL:https://crc326gaus.de/event/orders-and-polytropes-matrices-from-valuations/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220121T151500
DTEND;TZID=Europe/Berlin:20220121T161500
DTSTAMP:20260412T153118
CREATED:20220124T103418Z
LAST-MODIFIED:20220601T072402Z
UID:2198-1642778100-1642781700@crc326gaus.de
SUMMARY:Applications of tropical geometry to irreducibility problems in algebraic geometry
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (First meeting Winter Semester 2021/22) \n15:15-16:15 Ilya Tyomkin (Ben Gurion University) \nAbstract:\nIn my talk\, I will discuss a novel tropical approach to classical irreducibility problems of Severi varieties and of Hurwitz schemes. I will explain how to prove such irreducibility results by investigating the properties of tropicalizations of one-parameter families of curves and of the induced maps to the tropical moduli space of parametrized tropical curves. The talk is based on a series of joint works with Karl Christ and Xiang He.
URL:https://crc326gaus.de/event/tgiz-seminar-tropical-geometry-in-zoom/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220121T163000
DTEND;TZID=Europe/Berlin:20220121T173000
DTSTAMP:20260412T153118
CREATED:20220601T072315Z
LAST-MODIFIED:20220601T072315Z
UID:3089-1642782600-1642786200@crc326gaus.de
SUMMARY:Uniform bounds for torsion packets on tropical curves
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (First meeting Winter Semester 2021/22) \nHarry Richman (University of Washington) \nAbstract:\nSay two points x\, y on an algebraic curve are in the same torsion packet if [x – y] is a torsion element of the Jacobian. In genus 0 and 1\, torsion packets have infinitely many points. In higher genus\, a theorem of Raynaud states that all torsion packets are finite. It was long conjectured\, and only recently proven*\, that the size of a torsion packet is bounded uniformly in terms of the genus of the underlying curve. We study the tropical analogue of this construction for a metric graph. On a higher genus metric graph\, torsion packets are not always finite\, but they are finite under an additional “genericity” assumption on the edge lengths. Under this genericity assumption\, the torsion packets satisfy a uniform bound in terms of the genus of the underlying graph. (*by Kuehne and Looper-Silverman-Wilmes in 2021)
URL:https://crc326gaus.de/event/uniform-bounds-for-torsion-packets-on-tropical-curves/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220126T093000
DTEND;TZID=Europe/Berlin:20220126T110000
DTSTAMP:20260412T153118
CREATED:20211102T151651Z
LAST-MODIFIED:20211124T140219Z
UID:1874-1643189400-1643194800@crc326gaus.de
SUMMARY:Joins of Henselian Huber pairs (Part 2)
DESCRIPTION:M. Amine Koubaa
URL:https://crc326gaus.de/event/joins-of-henselian-huber-pairs-part-2/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 4\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220126T160000
DTEND;TZID=Europe/Berlin:20220126T170000
DTSTAMP:20260412T153118
CREATED:20211209T151241Z
LAST-MODIFIED:20220119T101141Z
UID:2120-1643212800-1643216400@crc326gaus.de
SUMMARY:Tyler Kelly: An Open Enumerative Theory for Landau-Ginzburg models.
DESCRIPTION:Oberseminar Algebra und Geometrie \nTalk by Tyler Kelly (Birmingham) \nAn Open Enumerative Theory for Landau-Ginzburg models. \nAbstract: Landau-Ginzburg models consist of a pair (W\, G) where W is a potential (that is\, a complex valued regular function from a quasi-affine variety X) and G is a group acting on X so that W is invariant. In the context of mirror symmetry\, oftentimes they can be viewed as a noncommutative symplectic deformation of a symplectic manifold. Over the past couple of decades there has been work in establishing an enumerative theory for a Landau-Ginzburg model\, akin to Gromov-Witten theory. Recently\, a few of us have aimed to create an open enumerative theory for Landau-Ginzburg models. In the end\, we can construct the mirror Landau-Ginzburg model’s potential function as a generating function of open enumerative invariants. This provides the Landau-Ginzburg analogue to Maslov index two discs / tropical discs for a symplectic manifold. This is joint work with Mark Gross and Ran Tessler.
URL:https://crc326gaus.de/event/tyler-kelly/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
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