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X-WR-CALDESC:Events for CRC 326 - GAUS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260105T100000
DTEND;TZID=Europe/Berlin:20260105T120000
DTSTAMP:20260404T081612
CREATED:20251030T135419Z
LAST-MODIFIED:20251030T135419Z
UID:12096-1767607200-1767614400@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Julie Bannwart (JGU Mainz) \nFrobenius modules and sheaves
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-8/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260108T091500
DTEND;TZID=Europe/Berlin:20260108T104500
DTSTAMP:20260404T081612
CREATED:20251022T125355Z
LAST-MODIFIED:20251118T135430Z
UID:12012-1767863700-1767869100@crc326gaus.de
SUMMARY:Konstruktion von Galoisüberlagerungen mithilfe starr-analytischer Verklebung
DESCRIPTION:Talk 10: Semistabile Kurven und der verbleibende Teil des Beweises von Theorem 2\nAlexander Schmidt (Universität Heidelberg)
URL:https://crc326gaus.de/event/konstruktion-von-galoisuberlagerungen-mithilfe-starr-analytischer-verklebung-10/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 7\, INF 205\, Heidelberg\, 69120\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260108T111500
DTEND;TZID=Europe/Berlin:20260108T124500
DTSTAMP:20260404T081612
CREATED:20251029T133625Z
LAST-MODIFIED:20251118T132935Z
UID:12057-1767870900-1767876300@crc326gaus.de
SUMMARY:Higher algebra
DESCRIPTION:Talk 10: Animation II\nJonathan Miles (Universität Frankfurt)
URL:https://crc326gaus.de/event/higher-algebra-10/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260109T133000
DTEND;TZID=Europe/Berlin:20260109T150000
DTSTAMP:20260404T081612
CREATED:20251212T110218Z
LAST-MODIFIED:20260102T141408Z
UID:12386-1767965400-1767970800@crc326gaus.de
SUMMARY:p-adic periods of 1-motives
DESCRIPTION:Felix Sefzig (Universität Zürich) \nI will present a new construction of the p-adic de Rham comparison isomorphism for 1-motives. As an application\, I will show how this approach leads to explicit computations of the periods of elliptic and hyperelliptic curves. In particular\, this provides concrete\, non-trivial examples of so-called motivic periods.
URL:https://crc326gaus.de/event/tba-151/
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:20260112T100000
DTEND;TZID=Europe/Berlin:20260112T120000
DTSTAMP:20260404T081612
CREATED:20251030T135532Z
LAST-MODIFIED:20251030T135714Z
UID:12098-1768212000-1768219200@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Timo Weiß (JGU Mainz) \nThe (covariant) RH correspondence
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-9/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260113T140000
DTEND;TZID=Europe/Berlin:20260113T153000
DTSTAMP:20260404T081612
CREATED:20250915T110717Z
LAST-MODIFIED:20251020T072733Z
UID:11665-1768312800-1768318200@crc326gaus.de
SUMMARY:Tame Local Langlands
DESCRIPTION:Talk 10: The local Langlands category\nTianyi Feng (TU Darmstadt) \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/tame-local-langlands-130126/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260113T160000
DTEND;TZID=Europe/Berlin:20260113T170000
DTSTAMP:20260404T081612
CREATED:20251020T080138Z
LAST-MODIFIED:20251209T073333Z
UID:11980-1768320000-1768323600@crc326gaus.de
SUMMARY:Jacobi forms and modular differential equations
DESCRIPTION:International Seminar on Automorphic Forms \nDmitrii Adler (MPIM Bonn):  Jacobi forms and modular differential equations \nThe Serre derivative is a differential operator that raises the weight of a modular form by 2. One possible generalization of the Serre derivative to the setting of Jacobi forms is a modification of the heat operator involving the quasi-modular Eisenstein series E_2. In this talk\, I will present an approach to constructing modular differential equations for Jacobi forms with respect to this operator. This method makes it possible to describe solutions of first- and second-order modular differential equations (Kaneko–Zagier type equations)\, to construct higher-order differential equations\, and to obtain applications to the elliptic genus of Calabi–Yau manifolds. This is joint work with Valery Gritsenko. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits)
URL:https://crc326gaus.de/event/tba-148/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260115T111500
DTEND;TZID=Europe/Berlin:20260115T124500
DTSTAMP:20260404T081612
CREATED:20251029T133908Z
LAST-MODIFIED:20251118T133022Z
UID:12059-1768475700-1768481100@crc326gaus.de
SUMMARY:Higher algebra
DESCRIPTION:Talk 11: Descent\nMaximilian Witzelsperger (Universität Heidelberg)
URL:https://crc326gaus.de/event/higher-algebra-11/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260116T111500
DTEND;TZID=Europe/Berlin:20260116T124500
DTSTAMP:20260404T081612
CREATED:20260109T113557Z
LAST-MODIFIED:20260109T113557Z
UID:12529-1768562100-1768567500@crc326gaus.de
SUMMARY:Picard modular forms and integrable systems
DESCRIPTION:Fabien Cléry (Loughborough University) \nWe will explain how certain integrable systems can be solved\nby using Picard modular forms. This is joint work with E. Ferapontov\,\nA. Odesskii and D. Zagier.
URL:https://crc326gaus.de/event/picard-modular-forms-and-integrable-systems/
LOCATION:Heidelberg\, Mathematikon\, SR 8\, Heidelberg\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260116T133000
DTEND;TZID=Europe/Berlin:20260116T150000
DTSTAMP:20260404T081612
CREATED:20260109T133323Z
LAST-MODIFIED:20260109T133323Z
UID:12532-1768570200-1768575600@crc326gaus.de
SUMMARY:Jacobians with Complex Multiplication
DESCRIPTION:Ben Moonen (Radboud University Nijmegen) \nAn old conjecture by Coleman predicts that if we fix a sufficiently large integer g\, there exist only finitely many (smooth projective) complex curves of genus g whose Jacobians are abelian variety of CM type. Coleman originally conjectured this to be true for g>3; there are\, however\, counterexamples for g up to 7. I will explain how\, through a programme initiated by Oort\, this problem relates to the question of whether in the moduli space of abelian varieties there exists positive dimensional special subvarieties (Shimura varieties) that are contained in the Torelli locus. The goal of my talk is to explain what we currently know about this problem\, and what not.
URL:https://crc326gaus.de/event/jacobians-with-complex-multiplication/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260116T140000
DTEND;TZID=Europe/Berlin:20260116T180000
DTSTAMP:20260404T081612
CREATED:20251216T110728Z
LAST-MODIFIED:20251216T110728Z
UID:12425-1768572000-1768586400@crc326gaus.de
SUMMARY:Conformal Field Theory
DESCRIPTION:14:00-15:00: Anne Moreau (Laboratoire de Mathématiques d’Orsay): W-algebras as conformal extensions of affine vertex algebras \n15:15-16:15: Quan Situ (Clermont Auvergne University): Extension between simple and costandard modules in the modular BGG category O \n17:00-18:00: Lennart Meier (Utrecht University): From conformal field theories to topological modular forms
URL:https://crc326gaus.de/event/conformal-field-theory-2/
LOCATION:Darmstadt\, Room S1|03 226\, Hochschulstraße 1\, Darmstadt\, Germany
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260119T100000
DTEND;TZID=Europe/Berlin:20260119T120000
DTSTAMP:20260404T081612
CREATED:20251030T135823Z
LAST-MODIFIED:20251030T135823Z
UID:12100-1768816800-1768824000@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Klaus Mattis (JGU Mainz) \nCompact objects
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-10/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260119T151500
DTEND;TZID=Europe/Berlin:20260119T174500
DTSTAMP:20260404T081612
CREATED:20251007T090037Z
LAST-MODIFIED:20251112T124413Z
UID:11805-1768835700-1768844700@crc326gaus.de
SUMMARY:Noether-Lefschetz loci in A_g and modularity
DESCRIPTION:16:45 – 17:45 Johannes Horn (Goethe Universität Frankfurt): Tautological projections \n16:45 – 17:45 Martin Möller (Goethe Universität Frankfurt): Modularity conjecture and Hecke orbits \n  \n 
URL:https://crc326gaus.de/event/noether-lefschetz-loci-in-a_g-and-modularity-5/
LOCATION:Darmstadt
CATEGORIES:GAUS-AG
ORGANIZER;CN="Jan Hendrik Bruinier":MAILTO:bruinier@mathematik.tu-darmstadt.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260120T140000
DTEND;TZID=Europe/Berlin:20260120T153000
DTSTAMP:20260404T081612
CREATED:20250915T110750Z
LAST-MODIFIED:20251020T072741Z
UID:11667-1768917600-1768923000@crc326gaus.de
SUMMARY:Tame Local Langlands
DESCRIPTION:Talk 11: Duality on the local Langlands category\nIan Gleason (National University of Singapore) \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/tame-local-langlands-200126/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260120T160000
DTEND;TZID=Europe/Berlin:20260120T170000
DTSTAMP:20260404T081612
CREATED:20251020T080249Z
LAST-MODIFIED:20260115T123107Z
UID:11981-1768924800-1768928400@crc326gaus.de
SUMMARY:Sums of Hecke eigenvalues along polynomials and arithmetic applications
DESCRIPTION:International Seminar on Automorphic Forms \nKaty Woo (Stanford University): Sums of Hecke eigenvalues along polynomials and arithmetic applications \nWe study sums of absolute values of Hecke eigenvalues of GL(2) representations that are tempered at all finite places. We show that these sums exhibit logarithmic savings over the trivial bound if and only if the representation is cuspidal. Further\, we connect the problem of studying the sums of Hecke eigenvalues along polynomial values to the base change problem for GL(2). Finally\, we will describe some arithmetic applications of bounds on these sums for counting rational points on del Pezzo surfaces. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits)
URL:https://crc326gaus.de/event/tba-149/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260123T153000
DTEND;TZID=Europe/Berlin:20260123T170000
DTSTAMP:20260404T081612
CREATED:20250915T105033Z
LAST-MODIFIED:20260108T092130Z
UID:11639-1769182200-1769187600@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Luca Marannino (Jussieu)\, On anticyclotomic twists of modular forms at inert primes \nIn this talk\, we outline an approach to the study of anticyclotomic twists of modular forms\, when the fixed prime p is inert in the relevant quadratic imaginary field. After revisiting old (and less old) results involving Heegner points/cycles\, we will focus on our recent work. Following ideas of Castella-Do for the “p split” case\, one can envisage a construction of an anticyclotomic Euler system arising from a suitable manipulation of diagonal classes on a triple product of modular curves and obtain new p-adic evidence for the Bloch-Kato conjecture in rank 1 situations. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl)
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-230126/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Sabrina Pauli":MAILTO:pauli@mathematik.tu-darmstadt.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260126T100000
DTEND;TZID=Europe/Berlin:20260126T120000
DTSTAMP:20260404T081612
CREATED:20251030T135937Z
LAST-MODIFIED:20251030T135937Z
UID:12102-1769421600-1769428800@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Anton Engelmann (JGU Mainz) \nUnit Frobenius modules
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-11/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260127T110000
DTEND;TZID=Europe/Berlin:20260127T160000
DTSTAMP:20260404T081612
CREATED:20251009T090142Z
LAST-MODIFIED:20260122T155038Z
UID:11846-1769511600-1769529600@crc326gaus.de
SUMMARY:p-adic Simpson correspondence
DESCRIPTION:Talk 9: Margherita Recchia (Leibniz Universität Hannover): Reduction of structure group and rigidification \nTalk 10: Ronald Solodov (Leibniz Universität Hannover): Invertible ℬ-modules via the exponential \n 
URL:https://crc326gaus.de/event/p-adic-simpson-correspondence-5/
LOCATION:Hannover\, Im Welfenschloss\, Raum A412
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260127T140000
DTEND;TZID=Europe/Berlin:20260127T153000
DTSTAMP:20260404T081612
CREATED:20250915T110919Z
LAST-MODIFIED:20251020T072749Z
UID:11669-1769522400-1769527800@crc326gaus.de
SUMMARY:Tame Local Langlands
DESCRIPTION:Talk 12: The stack of local Langlands parameters\nZhen Huang (University of Padova) \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/tame-local-langlands-270126/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260127T160000
DTEND;TZID=Europe/Berlin:20260127T170000
DTSTAMP:20260404T081612
CREATED:20251020T080353Z
LAST-MODIFIED:20260119T081848Z
UID:11984-1769529600-1769533200@crc326gaus.de
SUMMARY:On the global Gan-Gross-Prasad conjecture for GSpin groups
DESCRIPTION:International Seminar on Automorphic Forms \nPan Yan ( University of Arizona): On the global Gan-Gross-Prasad conjecture for GSpin groups \nWe prove one direction of the global Gan-Gross-Prasad conjecture for generic representations of GSpin groups\, namely the implication from the non-vanishing of the Bessel period to the non-vanishing of the central value of L-function. The proof is based on a new Rankin-Selberg integral for GSpin groups using Bessel models. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits)
URL:https://crc326gaus.de/event/tba-150/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260130T133000
DTEND;TZID=Europe/Berlin:20260130T143000
DTSTAMP:20260404T081612
CREATED:20260123T151627Z
LAST-MODIFIED:20260123T151627Z
UID:12614-1769779800-1769783400@crc326gaus.de
SUMMARY:The Bloch conductor formula
DESCRIPTION:Dr. Massimo Pippi (Université Angers) \nLet X be a regular scheme over the spectrum of a DVR S. Bloch conjectured a formula which relates the algebraic differential forms of X with the total dimension of the vanishing cohomology of X/S. In this talk I’ll describe a proof of this formula using methods from non-commutative and derived algebraic geometry. This is a joint work with Dario Beraldo.
URL:https://crc326gaus.de/event/the-bloch-conductor-formula/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260130T153000
DTEND;TZID=Europe/Berlin:20260130T170000
DTSTAMP:20260404T081612
CREATED:20250915T105124Z
LAST-MODIFIED:20260122T111355Z
UID:11641-1769787000-1769792400@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Maxime Ramzi (Universität Münster): On free rigid commutative algebras \nEfimov’s recent discovery of continuous K-theory has sparked some interest in the notion of dualizable categories and related objects\, such as rigid commutative algebras\, which appear in very varied contexts\, from sheaf theory to analytic geometry. In this context\, a thorough analysis of rigid commutative algebras seems to be needed.\nIn this talk\, after giving an introduction to the context above\,\, I will discuss a formula for free rigid commutative algebras in the context of 2-presentably symmetric monoidal 2-categories. The formula recovers some results of Barkan and Steinebrunner\, but it has some surprising features which have some consequences for the theory of rigidification of locally rigid commutative algebras\, which\, time permitting\, I will sketch. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl)
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-300126/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Sabrina Pauli":MAILTO:pauli@mathematik.tu-darmstadt.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260202T100000
DTEND;TZID=Europe/Berlin:20260202T120000
DTSTAMP:20260404T081612
CREATED:20251030T140041Z
LAST-MODIFIED:20251030T140041Z
UID:12104-1770026400-1770033600@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Manuel Blickle (JGU Mainz) \nThe EK correspondence (1)
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-12/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260202T164500
DTEND;TZID=Europe/Berlin:20260202T174500
DTSTAMP:20260404T081612
CREATED:20251008T081505Z
LAST-MODIFIED:20260126T074310Z
UID:11825-1770050700-1770054300@crc326gaus.de
SUMMARY:Oberseminar Algebra und Geometrie
DESCRIPTION:Veronika Ertl (Universität Caen): Rigid syntomic cohomology over p-adic fields \nAbstract: Syntomic cohomology plays an important role in the research of (p-adic) L-functions. An advantage of a rigid analytic approach is that it gives an explicit description suitable for calculations. On the other hand\, it is rather technical\, which makes laying down the foundations challenging. In this talk I will report on joint work in progress with Kazuki Yamada. I will explain how to extend the theory that we have previously developed of a syntomic cohomology for semistable schemes to the case of varieties over p-adic fields.
URL:https://crc326gaus.de/event/oberseminar-algebra-und-geometrie-3/
LOCATION:Frankfurt\, Rober-Mayer-Str. 10\, Raum 711 klein
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260203T140000
DTEND;TZID=Europe/Berlin:20260203T153000
DTSTAMP:20260404T081612
CREATED:20250915T110953Z
LAST-MODIFIED:20251020T072757Z
UID:11671-1770127200-1770132600@crc326gaus.de
SUMMARY:Tame Local Langlands
DESCRIPTION:Talk 13: The geometry of the stack of local Langlands parameters\nYifei Zhao (University of Münster) \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/tame-local-langlands-030226/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260204T140000
DTEND;TZID=Europe/Berlin:20260204T180000
DTSTAMP:20260404T081612
CREATED:20251009T091423Z
LAST-MODIFIED:20260129T140249Z
UID:11848-1770213600-1770228000@crc326gaus.de
SUMMARY:p-adic Simpson correspondence
DESCRIPTION:Talk 11: Xinyu Shao (Leibniz Universität Hannover): The local correspondence \nTalk 12: Dmytro Rudenko (Leibniz Universität Hannover): Canonical Higgs fields for pro-étale bundles \n  \n 
URL:https://crc326gaus.de/event/p-adic-simpson-correspondence-6/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260209T100000
DTEND;TZID=Europe/Berlin:20260209T120000
DTSTAMP:20260404T081612
CREATED:20251030T140151Z
LAST-MODIFIED:20251030T140151Z
UID:12106-1770631200-1770638400@crc326gaus.de
SUMMARY:Riemann-Hilbert correspondence in characteristic p
DESCRIPTION:Manuel Blickle (JGU Mainz) \nThe EK correspondence (2)
URL:https://crc326gaus.de/event/riemann-hilbert-correspondence-in-characteristic-p-13/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260210T130000
DTEND;TZID=Europe/Berlin:20260213T140000
DTSTAMP:20260404T081612
CREATED:20260202T122429Z
LAST-MODIFIED:20260204T114537Z
UID:12636-1770728400-1770991200@crc326gaus.de
SUMMARY:Workshop "Moduli in Heidelberg"
DESCRIPTION:Veronica Arena : TBA \nLuca Battistella : Vector bundles on Olsson fans \nLogarithmic geometry is a language that combines piecewise-linear and algebraic geometry\, particularly useful for tracking the combinatorics of compactifications and degenerations of algebraic varieties. Olsson’s stack of logarithmic structures\, and its charts provided by Artin cones\, have played a fundamental role in moduli theory and enumerative geometry. Recent developments concerning stability\, good moduli spaces\, and logarithmic sheaf theory show the utility of considering Artin fans over a base\, or Olsson fans. In joint work with Francesca Carocci and Jonathan Wise\, we study their structure and vector bundles over them\, generalising the theory of equivariant bundles on toric varieties. If time permits\, I will discuss the relationship with Grassmannians and limit linear series that motivated our investigation. \nThomas Blomme : Correlated Gromov-Witten invariants & Multiple cover formula  \nAbelian surfaces are complex tori whose enumerative invariants seem to satisfy remarkable regularity properties. The computation of their reduced Gromov-Witten invariants in the case of primitive classes has already been well studied with many complete computations by Bryan-Oberdieck-Pandharipande-Yin. A few years ago\, G. Oberdieck conjectured a multiple cover formula expressing in a very simple way the invariants for the non-primitive classes in terms of the primitive one. This would close the computation of GW invariants for abelian surfaces. In this second talk\, we aim to explain how correlated invariants naturally show up in the decomposition formula for abelian surfaces\, and how they allow to prove the multiple cover formula conjecture for many instances. This is joint work with F. Carocci. \nFrancesca Carocci : Correlated Gromov-Witten invariants & DR cycle formula \nIn this talk\, we will talk about a geometric refinement for log Gromov -Witten invariants of P^1-bundles on smooth projective varieties\, called correlated Gromov-Witten invariants\, introduced in a joint work with T. Blomme. In order to compute them\, we proved a correlated refinement of Pixton double-ramification cycle formula with target varieties. We will state the formula and try to give an idea of how it is obtained as an application of the Universal DR formula of Bae-Holmes-Pandharipande-Schmitt-Schwarz. \nAitor Iribar Lopez : TBA \nPatrick Kenendy-Hunt : TBA \nNavid Nabijou : Tautological projection of the Prym-Torelli locus \nThe moduli space of abelian varieties admits a tautological ring generated by lambda classes. In contrast to the space of stable curves\, this tautological ring has a remarkably simple presentation. This allows for the construction of a canonical “tautological projection” which maps the full Chow ring onto the tautological subring\, providing a left inverse to the inclusion of the latter in the former. \nGiven a Chow class on the moduli space of abelian varieties\, it is natural to attempt to compute its tautological projection. For the Torelli locus (the locus of Jacobians) an algorithm was provided by Faber\, the difficult step being integrating monomials in lambda classes on the space of stable curves. \nWe establish a corresponding algorithm for the Prym-Torelli locus (the locus of Prym varieties). The novel geometric content is a closed formula relating three different types of lambda classes (source\, target\, and Prym) on the moduli space of admissible covers\, proved using Grothendieck-Riemann-Roch. \nThis is joint work in progress with Yoav Len and Sam Molcho. \n  \nDenis Nesterov : Hilbert-Chow crepant resolution conjecture \nThe conjecture in the title\, proposed by Ruan\, predicts that the quantum cohomology of Hilbert schemes of points on a surface is isomorphic to the orbifold cohomology of symmetric products. I will present a proof of the conjecture that relies on Fulton–MacPherson compactifications. \n  \nSabrina Pauli : Tropical correspondence theorems for plane curve counts over arbitrary fields \nWe study the problem of counting rational curves of fixed degree on a toric del Pezzo surface subject to point conditions. Over algebraically closed fields\, this count is invariant under the choice of point conditions. Over non-algebraically closed fields\, however\, the invariance fails. For real numbers\, Welschinger’s groundbreaking work introduced a signed count of real curves that restores invariance. \nBuilding on this\, Levine and Kass-Levine-Solomon-Wickelgren have developed curve counts over arbitrary fields that not only generalize Welschinger’s signed counts and classical counts over algebraically closed fields\, but also encode much richer arithmetic information. \nIn this talk I will survey these different approaches to counting rational curves with point conditions and discuss a recent joint result with A. Jaramillo Puentes\, H. Markwig\, and F. Röhrle. We establish a tropical correspondence theorem for curve counts over arbitrary fields\, identifying the count of algebraic curves with point conditions with a weighted count of their tropical counterparts with point conditions. The latter are combinatorial objects and there are several purely combinatorial methods to find all tropical curves with point conditions. \n  \nAaron Pixton : Cycles on universal Jacobians \nLet J be the degree 0 universal Jacobian over the moduli space of smooth curves of genus g. Its Chow ring\, CH(J)\, has an extra grading by weight (the Beauville decomposition). I will explain how to express the weight w part of CH(J) in terms of the Chow ring of a moduli space of curves with w marked points. This interpretation lets us translate ideas back and forth between cycles on universal Jacobians and cycles on moduli spaces of curves. Two consequences are a conjectural description of all tautological relations on universal Jacobians and a definition of a Fourier transform on moduli spaces of curves. I will also discuss how to extend this correspondence to compactified Jacobians over the moduli space of stable curves. This talk presents joint work with Younghan Bae. \nMaximilian Schimpf : TBA \nPim Spelier : TBA \nCalla Tschanz : From logarithmic Hilbert schemes to degenerations of hyperkähler varieties  \nIn this talk\, I will discuss my previous work on constructing explicit models of logarithmic Hilbert schemes. This relates to work or Li-Wu on expanded degenerations\, Gulbrandsen-Halle-Hulek on degenerations of Hilbert schemes of points and Maulik-Ranganathan on logarithmic Hilbert schemes. The constructions I consider are local. I will then explain how we globalise these in joint work with Shafi and apply them to construct minimal type III degenerations of hyperkähler varieties\, namely Hilbert schemes of points on K3 surfaces. \n  \nAngelina Zheng : The Brill-Noether rank and Martens’ theorem for tropical curves \nDivisor theory on metric graphs has provided combinatorial proofs of several algebro-geometric results\, most notably in Brill–Noether theory. In algebraic geometry\, the dimensions of Brill–Noether loci play crucial roles\, as in Martens’ theorem characterizing hyperelliptic curves. However\, the tropical analogue of this result fails for metric graphs. Furthermore\, the dimension of Brill–Noether loci does not vary upper semicontinuous in the moduli of tropical curves\, as observed by C. M. Lim\, S. Payne\, and N. Potashnik. Motivated by this\, D. Jensen and Y. Len conjectured that replacing the dimension with the Brill–Noether rank would yield a valid tropical analogue. However\, this conjecture was later disproved by Coppens. \nIn this talk\, based on joint work with G. Capobianco\, I will discuss these counterexamples\, and generalise them to a wider class of graphs. Finally\, I’ll show that a suitably strengthened version of the conjecture holds for any graph.
URL:https://crc326gaus.de/event/workshop-moduli-in-heidelberg/
LOCATION:Heidelberg\, MATHEMATIKON\, Konferenzraum\, 5. OG\, Campus Im Neuenheimer Feld (INF)\, INF 205\, Heidelberg\, 69120\, Germany
CATEGORIES:GAUS-Workshop
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
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DTSTART;TZID=Europe/Berlin:20260210T140000
DTEND;TZID=Europe/Berlin:20260210T173000
DTSTAMP:20260404T081612
CREATED:20250915T111025Z
LAST-MODIFIED:20251013T092535Z
UID:11673-1770732000-1770744600@crc326gaus.de
SUMMARY:Tame Local Langlands
DESCRIPTION:Talk 14: Weil-Deligne representations and discrete parameters\nJoão Lourenço (Paris 13) \nExplain Sections 2.1.4 and 2.1.5. Focus on the following aspects.\n(1) Explain the stacks LocWD\nLG\,F and LocWLG\,F and the isomorphism of the former one with LocLG\,F . Explain the maps LocLG\,F ∼= LocWD LG\,F → LocWLG\,F → Spf ZLG\,F .\n(2) Define (essentielly) discrete Langlands parameters (before Def. 2.28 and Def. 2.28 itself).\n(3) Explain Prop. 2.32\, Cor. 2.33. Mention Lemma 2.34. \nTalk 15: The categorical local Langlands conjecture\nTimo Richarz (TU Darmstadt) \nRecall the theory of (ind)coherent sheaves (Chapter 9). Since we are happy\nto restrict to the case that Λ = Q¯ℓ\, we may assume that we are in the “classical”\ncharacteristic zero case. Then state the categorical local Langlands conjecture.\nUse the opportunity to summarized the first half the seminar. \nThe final session on February 10 will be a double session from 14:00 to 17:30\, followed by dinner. \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/tame-local-langlands-100226/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
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DTSTART;TZID=Europe/Berlin:20260211T140000
DTEND;TZID=Europe/Berlin:20260211T180000
DTSTAMP:20260404T081612
CREATED:20251009T100104Z
LAST-MODIFIED:20260129T140522Z
UID:11854-1770818400-1770832800@crc326gaus.de
SUMMARY:p-adic Simpson correspondence
DESCRIPTION:Talk 13: Margherita Recchia (Leibniz Universität Hannover): Proof of the correspondence \nTalk 14: Simpson gerbe \n  \n 
URL:https://crc326gaus.de/event/p-adic-simpson-correspondence-7/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-AG
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