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X-WR-CALDESC:Events for CRC 326 - GAUS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220701T133000
DTEND;TZID=Europe/Berlin:20220701T150000
DTSTAMP:20260601T014007
CREATED:20220624T153750Z
LAST-MODIFIED:20220624T153750Z
UID:3206-1656682200-1656687600@crc326gaus.de
SUMMARY:A descent principle for compact support cohomology theories
DESCRIPTION:Josefien Kuijper (Stockholms universitet)
URL:https://crc326gaus.de/event/a-descent-principle-for-compact-support-cohomology-theories/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Christian Dahlhausen":MAILTO:cdahlhausen@mathi.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220701T140000
DTEND;TZID=Europe/Berlin:20220701T153000
DTSTAMP:20260601T014007
CREATED:20220628T081233Z
LAST-MODIFIED:20220628T081233Z
UID:3210-1656684000-1656689400@crc326gaus.de
SUMMARY:Hecke orbits on Shimura varieties of Hodge type
DESCRIPTION:Oort conjectured in 1995 that isogeny classes in the moduli space A_g of principally polarised abelian varieties in characteristic p are Zariski dense in the Newton strata containing them. There is a straightforward generalisation of this conjecture to the special fibres of Shimura varieties of Hodge type\, and in this talk\, I will present a proof of this conjecture.  I will mostly focus on the case of A_g since most of the new ideas can already be explained in this special case. This is joint work with Marco D'Addezio.\nMeeting-ID: 635 7328 0984\nPassword: 100003
URL:https://crc326gaus.de/event/hecke-orbits-on-shimura-varieties-of-hodge-type/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220701T140000
DTEND;TZID=Europe/Berlin:20220701T173000
DTSTAMP:20260601T014007
CREATED:20220411T114804Z
LAST-MODIFIED:20220629T130220Z
UID:2599-1656684000-1656696600@crc326gaus.de
SUMMARY:The geometry of coherent sheaves: From derived categories to Higgs bundles
DESCRIPTION:GAUS-Workshop: “P=W conjecture”\n14:00-15:00: Jochen Heinloth (Duisburg-Essen)\n Introduction to the P=W conjecture\n15:15-16:15: Junliang Shen (Yale)\nSymmetries of cohomology of Hitchin moduli spaces and the P=W conjecture\n16:30-17:30: Naoki Koseki (Edinburgh)\nCohomological chi-independence for Higgs bundles and Donaldson-Thomas invariants
URL:https://crc326gaus.de/event/the-geometry-of-coherent-sheaves-from-derived-categories-to-higgs-bundles-3/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220707T140000
DTEND;TZID=Europe/Berlin:20220707T160000
DTSTAMP:20260601T014007
CREATED:20220620T073648Z
LAST-MODIFIED:20220627T064151Z
UID:3151-1657202400-1657209600@crc326gaus.de
SUMMARY:A non-hyperpergeometric E-function
DESCRIPTION:
URL:https://crc326gaus.de/event/t-b-a-2/
LOCATION:Mainz\, Hilbertraum (05-432) and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220708T140000
DTEND;TZID=Europe/Berlin:20220708T150000
DTSTAMP:20260601T014007
CREATED:20220614T114944Z
LAST-MODIFIED:20220614T114944Z
UID:3135-1657288800-1657292400@crc326gaus.de
SUMMARY:Tropical homology over discretely valued fields
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (Third meeting Summer Semester 2022)\nMatilde Manzaroli (Universität Tübingen) \nAbstract:  The talk is about a work in progress with Emiliano Ambrosi.\nIlia Itenberg\, Ludmil Katzarkov\, Grigory Mikhalkin and Ilia Zharkov proved in “Tropical homology” that for a smooth proper family of complex varieties over the punctured disk with smooth tropicalisation X the Hodge numbers of the general fiber coincide with the dimensions of the tropical homology groups of X. We explore the possibility of extending this result over more general discrete valued fields of arithmetic interest\, such as R((t)) or Qp\, the field of p-adique numbers. In the process of doing this\, we get an action of the Galois group on the tropical homology groups and we compare this action\, in certain cases\, with the action defined by Tyler Foster in “Galois actions on analytifications and tropicalisation”.
URL:https://crc326gaus.de/event/tropical-homology-over-discretely-valued-fields/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220708T140000
DTEND;TZID=Europe/Berlin:20220708T153000
DTSTAMP:20260601T014007
CREATED:20220705T083542Z
LAST-MODIFIED:20220708T081313Z
UID:3305-1657288800-1657294200@crc326gaus.de
SUMMARY:Motivic Grothendieck Lefschetz Formula
DESCRIPTION:Denis-Charles Cisinski (Universität Regensburg)
URL:https://crc326gaus.de/event/motivic-grothendieck-lefschetz-formula/
LOCATION:Online via Zoom (Darmstadt)\, Meeting-ID: 635 7328 0984\, Password: 100003
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220708T153000
DTEND;TZID=Europe/Berlin:20220708T163000
DTSTAMP:20260601T014007
CREATED:20220614T115501Z
LAST-MODIFIED:20220623T074639Z
UID:3137-1657294200-1657297800@crc326gaus.de
SUMMARY:Initial degenerations of flag varieties
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (Third meeting Summer Semester 2022)\nDaniel Corey (Technische Universität Berlin) \nAbstract: We prove that the initial degenerations of the type-A flag variety admit closed immersions into finite inverse limits of flag matroid strata\, where the diagrams are derived from matroidal subdivisions of a suitable flag matroid polytope. As an application\, we prove that the initial degenerations of Fl_0(n)—the open subvariety of the complete flag variety Fl(n) consisting of flags in general position—are smooth and irreducible when n ≤ 4. We also study the Chow quotient of Fl(n) by the diagonal torus of PGL(n)\, and show that\, for n=4\, this is a log crepant resolution of its log canonical model. This is based on joint work with Jorge Alberto Olarte.
URL:https://crc326gaus.de/event/tba-7/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220708T164500
DTEND;TZID=Europe/Berlin:20220708T174500
DTSTAMP:20260601T014007
CREATED:20220614T115752Z
LAST-MODIFIED:20220623T074804Z
UID:3139-1657298700-1657302300@crc326gaus.de
SUMMARY:An analogue of Kirchhoff's theorem for the tropical Prym variety
DESCRIPTION:TGiZ-Seminar: Tropical geometry in Zoom (Third meeting Summer Semester 2022)\nDmitry Zakharov (Central Michigan University) \nAbstract: The Jacobian of a finite graph is a finite abelian group\, and Kirchhoff’s celebrated matrix tree theorem computes the order of the Jacobian as the number of spanning trees of the graph. The Jacobian Jac(G) of a metric graph G is a real torus of dimension equal to b_1(G)\, and a weighted version of Kirchhoff’s theorem expresses the volume of Jac(G) as a weighted sum over all spanning trees of G. \nA recent paper of An\, Baker\, Kuperberg\, and Shokrieh gives a geometric interpretation of the weighted matrix-tree theorem of a metric graph G\, based on an earlier result of Mikhalkin and Zharkov. Namely\, each element of Jac(G) is represented by a unique (up to translation) so-called break divisor. The type of break divisor defines a canonical cellular decomposition of Jac(G)\, and the individual terms in the volume formula for Jac(G) are the volumes of the cells. \nI will state and prove analogous results for the tropical Prym variety Pr(G’/G) associated to a double cover of metric graphs G’->G\, as defined by Jensen\, Len\, and Ulirsch. The volume of Pr(G’/G) is calculated as a weighted sum over certain collections of spanning cycles on the target graph G\, generalizing a similar result of Zaslavsky\, Reiner and Tseng for ordinary graphs. I will then give a geometric interpretation of the volume formula in terms of a semi-canonical representability result for Prym divisors. I will discuss possible applications to the problem of resolving the Prym-Torelli map.
URL:https://crc326gaus.de/event/tba-8/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220714T140000
DTEND;TZID=Europe/Berlin:20220714T160000
DTSTAMP:20260601T014007
CREATED:20220629T091840Z
LAST-MODIFIED:20220707T064709Z
UID:3223-1657807200-1657814400@crc326gaus.de
SUMMARY:Localization theorem for algebraic stacks
DESCRIPTION:
URL:https://crc326gaus.de/event/tba-10/
LOCATION:Mainz\, Hilbertraum (05-432) and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220722T133000
DTEND;TZID=Europe/Berlin:20220722T150000
DTSTAMP:20260601T014007
CREATED:20220715T125329Z
LAST-MODIFIED:20220715T125329Z
UID:3326-1658496600-1658502000@crc326gaus.de
SUMMARY:Heights of Bloch cycles and limit mixed Hodge structures
DESCRIPTION:Prof. Robin de Jong (Universität Leiden)
URL:https://crc326gaus.de/event/heights-of-bloch-cycles-and-limit-mixed-hodge-structures/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Dr. Ana Mar%C3%ADa Botero":MAILTO:abotero@mathi.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220722T140000
DTEND;TZID=Europe/Berlin:20220722T174000
DTSTAMP:20260601T014007
CREATED:20220411T114929Z
LAST-MODIFIED:20220720T064802Z
UID:2601-1658498400-1658511600@crc326gaus.de
SUMMARY:The geometry of coherent sheaves: From derived categories to Higgs bundles
DESCRIPTION:GAUS-Workshop: “Non-Abelian Hodge theory for real Lie groups and applications” \n14:00-15:00: Oscar Garcia-Prada (Madrid)\nNon-abelian Hodge correspondence for real groups and higher Teichmüller spaces\n15:20-16:20: Florent Schaffhauser (Bogota)\nHigher Teichmüller spaces for orbifolds\n16:40-17:40: Brian Collier (Riverside)\nHolomorphic curves and cyclic G2-Higgs bundles
URL:https://crc326gaus.de/event/the-geometry-of-coherent-sheaves-from-derived-categories-to-higgs-bundles-4/
LOCATION:Frankfurt and Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20220729T140000
DTEND;TZID=Europe/Berlin:20220729T170000
DTSTAMP:20260601T014007
CREATED:20220727T082203Z
LAST-MODIFIED:20220727T082203Z
UID:3392-1659103200-1659114000@crc326gaus.de
SUMMARY:Six Functors and Descent for Solid Sheaves on Discrete Adic Spaces
DESCRIPTION:There will be a „Vorsitzung“ on Thursday (July 28) evening\nat 19:30 in Darmstadt Biergarten\n(Dieburger Strasse 97\, 64287 Darmstadt\, www.biergarten-darmstadt.com)\nEverybody is invited to join. Please write me a short e-mail\nif you are interested in joining.\nZoom\, Meeting-ID 839 7522 1432\nKenncode 053320
URL:https://crc326gaus.de/event/six-functors-and-descent-for-solid-sheaves-on-discrete-adic-spaces/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-Seminar
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