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DTSTART;TZID=Europe/Berlin:20240207T141500
DTEND;TZID=Europe/Berlin:20240207T163000
DTSTAMP:20260423T142859
CREATED:20231024T092104Z
LAST-MODIFIED:20240203T191234Z
UID:6775-1707315300-1707323400@crc326gaus.de
SUMMARY:Anabelian geometry
DESCRIPTION:14:15 – 15:15 Talk 13: Magnus Carlsson (Goethe Universität Frankfurt): Birational liftability: reduction to number fields \n15:30 – 16:30 Talk 14: Katharina Hübner (Goethe Universität Frankfurt): Birational liftability: proving main theorems
URL:https://crc326gaus.de/event/anabelian-geometry-5/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 310\, Deutschland
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240206T160000
DTEND;TZID=Europe/Berlin:20240206T170000
DTSTAMP:20260423T142859
CREATED:20231009T105725Z
LAST-MODIFIED:20240130T085731Z
UID:6422-1707235200-1707238800@crc326gaus.de
SUMMARY:Evaluating the wild Brauer group
DESCRIPTION:International Seminar on Automorphic Forms \nRachel Newton (King’s College London) \nThe local-global approach to the study of rational points on varieties over number fields begins by embedding the set of rational points on a variety X into the set of its adelic points. The Brauer–Manin pairing cuts out a subset of the adelic points\, called the Brauer–Manin set\, that contains the rational points. If the set of adelic points is non-empty but the Brauer–Manin set is empty then we say there’s a Brauer–Manin obstruction to the existence of rational points on X. Computing the Brauer–Manin pairing involves evaluating elements of the Brauer group of X at local points. If an element of the Brauer group has order coprime to p\, then its evaluation at a p-adic point factors via reduction of the point modulo p. For p-torsion elements this is no longer the case: in order to compute the evaluation map one must know the point to a higher p-adic precision. Classifying Brauer group elements according to the precision required to evaluate them at p-adic points gives a filtration which we describe using work of Bloch and Kato. Applications of our work include addressing Swinnerton-Dyer’s question about which places can play a role in the Brauer–Manin obstruction. This is joint work with Martin Bright. \nYou can join the Zoom meeting at https://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-72/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240202T160000
DTEND;TZID=Europe/Berlin:20240202T170000
DTSTAMP:20260423T142859
CREATED:20240123T143136Z
LAST-MODIFIED:20240123T143136Z
UID:7615-1706889600-1706893200@crc326gaus.de
SUMMARY:Category of matroids with coefficients
DESCRIPTION:TGiF-Seminar: Tropical geometry in Frankfurt (Second meeting Winter Semester 2023/24) \nManoel Zanoelo Jarra (Universität Groningen) \nAbstract: Matroids are combinatorial abstractions of the concept of independence in linear algebra. There is a way back: when representing a matroid over a field we get a linear subspace. Another algebraic object for which we can represent matroids is the semifield of tropical numbers\, which gives us valuated matroids. In this talk we introduce Baker-Bowler’s theory of matroids with coefficients\, which recovers both classical and valuated matroids\, as well linear subspaces\, and we show how to give a categorical treatment to these objects that respects matroidal constructions\, as minors and duality. This is a joint work with Oliver Lorscheid and Eduardo Vital.
URL:https://crc326gaus.de/event/category-of-matroids-with-coefficients/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240202T153000
DTEND;TZID=Europe/Berlin:20240202T170000
DTSTAMP:20260423T142859
CREATED:20231016T111637Z
LAST-MODIFIED:20240123T160047Z
UID:6708-1706887800-1706893200@crc326gaus.de
SUMMARY:Gluing sheaves along Harder-Narasimhan strata of Bun_2.
DESCRIPTION:Seminar on Arithmetic Geometry \nJonathan Miles (University of Frankfurt) \nWe explain how to glue sheaves on the moduli stack of G-bundles on the Fargues-Fontaine curve. In the case of prime-to-p torsion coefficients\, the category D_ét(Bun_G) can be thought of as an approximation of the automorphic data appearing in the geometrization of the local Langlands correspondence due to Fargues-Scholze. The stratification of Bun_G arising from the Harder-Narasimhan slope formalism on G-isocrystals yields a semi-orthogonal decomposition of D_ét(Bun_G) into the derived categories of smooth representations of inner forms of Levi subgroups of G. Between such categories there is a (partial) six functor formalism that can be used to compute how sheaves arising on a quasi-compact open substack interact with sheaves on higher strata via nearby cycles functors\, which can be interpreted as a derived analogue of Jacquet restriction functors for parabolic subgroups of G (up to inner twisting). We eventually restrict to G=GL_2 and to sufficiently nice coefficients (notably this includes an algebraic closure of F_\ell and Z/\ell^n Z for almost all \ell prime to p)\, and we will explain how these computations fundamentally reduce to the étale cohomology of p-adic analogues of locally symmetric spaces\, such as the Bruhat-Tits building and moduli spaces of mixed p-adic Hodge structures. \nZoom (635 7328 0984\, Password: smallest six digit prime).
URL:https://crc326gaus.de/event/tba-91/
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:20240202T143000
DTEND;TZID=Europe/Berlin:20240202T153000
DTSTAMP:20260423T142859
CREATED:20240123T143810Z
LAST-MODIFIED:20240123T143810Z
UID:7614-1706884200-1706887800@crc326gaus.de
SUMMARY:Hard Lefschetz theorem and Hodge-Riemann relations for convex valuations
DESCRIPTION:TGiF-Seminar: Tropical geometry in Frankfurt (Second meeting Winter Semester 2023/24) \nAndreas Bernig (Goethe-Universität Frankfurt) \nAbstract: The hard Lefschetz theorem and the Hodge-Riemann relations have their origin in the cohomology theory of compact Kähler manifolds. In recent years it has become clear that similar results hold in many different settings\, in particular in algebraic geometry and combinatorics (work by Adiprasito\, Huh and others). In a recent joint work with Jan Kotrbatý and Thomas Wannerer\, we prove the hard Lefschetz theorem and Hodge-Riemann relations for valuations on convex bodies. These results can be translated into an array of quadratic inequalities for mixed volumes of smooth convex bodies\, giving a smooth analogue of the quadratic inequalities in McMullen’s polytope algebra. Surprinsingly\, these inequalities fail for general convex bodies. Our proof uses elliptic operators and perturbation theory of unbounded operators.
URL:https://crc326gaus.de/event/hard-lefschetz-theorem-and-hodge-riemann-relations-for-convex-valuations-2/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240202T133000
DTEND;TZID=Europe/Berlin:20240202T150000
DTSTAMP:20260423T142859
CREATED:20240126T120455Z
LAST-MODIFIED:20240126T120455Z
UID:7637-1706880600-1706886000@crc326gaus.de
SUMMARY:On Voevodsky's reconstruction theorem
DESCRIPTION:Sebastian Wolf (Universität Regensburg) \nIn 1990\, Voevodsky proved a conjecture of Grothendieck\, that morphisms of normal schemes of finite type over the rational numbers can be reconstructed from the induced morphism of étale topoi. The goal of this talk is to give an outline of Voevodsky’s proof and explain how to extend it to certain sufficiently nice singular schemes. If time permits\, we will also see what one has to modify to make it work in positive characteristic. This is joint work with Peter Haine.
URL:https://crc326gaus.de/event/on-voevodskys-reconstruction-theorem/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Tim Holzschuh":MAILTO:tholzschuh@mathi.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240202T101500
DTEND;TZID=Europe/Berlin:20240202T114500
DTSTAMP:20260423T142859
CREATED:20231121T125101Z
LAST-MODIFIED:20240110T141939Z
UID:7187-1706868900-1706874300@crc326gaus.de
SUMMARY:Exodromy
DESCRIPTION:Tom Bachmann (Universität Mainz): Spectral higher topoi
URL:https://crc326gaus.de/event/exodromy-13/
LOCATION:Mainz\, Raum 05-514
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240202T091500
DTEND;TZID=Europe/Berlin:20240202T104500
DTSTAMP:20260423T142859
CREATED:20240110T134428Z
LAST-MODIFIED:20240110T134428Z
UID:7571-1706865300-1706870700@crc326gaus.de
SUMMARY:Rigid meromorphic cocycles
DESCRIPTION:Yingkun Li (TU Darmstadt): Rigid meromorphic cocycles for orthogonal groups I
URL:https://crc326gaus.de/event/rigid-meromorphic-cocycles-12/
LOCATION:Heidelberg\, Mathematikon\, SR 8 und Zoom\, Germany
CATEGORIES:GAUS-AG
ORGANIZER;CN="O%C4%9Fuz Gezmi%C5%9F":MAILTO:oguz.gezmis@iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240201T151500
DTEND;TZID=Europe/Berlin:20240201T164500
DTSTAMP:20260423T142859
CREATED:20230809T124330Z
LAST-MODIFIED:20230809T130512Z
UID:6164-1706800500-1706805900@crc326gaus.de
SUMMARY:Rigid Analytic Motives
DESCRIPTION:Meeting ID:612 2072 7363\, Password: largest six digit prime
URL:https://crc326gaus.de/event/rigid-analytic-motives-14/
LOCATION:Darmstadt\, Room 244 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240201T150000
DTEND;TZID=Europe/Berlin:20240201T163000
DTSTAMP:20260423T142859
CREATED:20231120T113029Z
LAST-MODIFIED:20231220T073332Z
UID:7102-1706799600-1706805000@crc326gaus.de
SUMMARY:Rigid Analytic Motives
DESCRIPTION:Talk 11: Rizacan Ciloglu (TU Darmstadt): Extending realization functors \nTalk 12: Torsten Wedhorn (TU Darmstadt): The de Rham realisation functor \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/rigid-analytic-motives/
LOCATION:Darmstadt\, Room 244 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240201T141500
DTEND;TZID=Europe/Berlin:20240201T151500
DTSTAMP:20260423T142859
CREATED:20231012T090600Z
LAST-MODIFIED:20240125T100727Z
UID:6656-1706796900-1706800500@crc326gaus.de
SUMMARY:On the motivic fundamental group
DESCRIPTION:Emil Jacobsen (Stockholm) \nAbstract: I will introduce the motivic fundamental group of a smooth variety\, and explain its relation to the usual fundamental group. The main result can also be phrased as follows: local systems of geometric origin are stable under extension in the category of local systems. I will also present a motivic version of a classical theorem of Hain\, on Malcev completions of monodromy representations. At the end\, I’ll explain some of the group/representation theoretic tools that go into these result. \nZoom Meeting-ID: 967 5163 9626 \nPasscode: last name of famous mathematician born in Königsberg (small letters)
URL:https://crc326gaus.de/event/tba-80/
LOCATION:Mainz\, Hilbertraum 05-432
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240201T110000
DTEND;TZID=Europe/Berlin:20240201T130000
DTSTAMP:20260423T142859
CREATED:20231010T133327Z
LAST-MODIFIED:20231121T150627Z
UID:6543-1706785200-1706792400@crc326gaus.de
SUMMARY:Emerton-Gee-Stacks
DESCRIPTION:Talk 12: Alireza Shavali (Universität Heidelberg): Crystalline Lifts
URL:https://crc326gaus.de/event/emerton-gee-stacks-12/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240131T131500
DTEND;TZID=Europe/Berlin:20240131T170000
DTSTAMP:20260423T142859
CREATED:20240116T122759Z
LAST-MODIFIED:20240116T122759Z
UID:7589-1706706900-1706720400@crc326gaus.de
SUMMARY:Anabelian geometry
DESCRIPTION:13:15 – 14:15  Talk 10: Amine Koubaa (Goethe Universität Frankfurt): SC over fields of finite type: main theorems \n14:30 – 15:30  Talk 11: Tim Holzschuh (Universität Heidelberg): Birational liftability: intro \n16:00 – 17:00  Talk 12: Leonie Scherer (Goethe Universität Frankfurt): Birational liftability: main tool
URL:https://crc326gaus.de/event/anabelian-geometry-6/
LOCATION:Heidelberg\, MATHEMATIKON\, SR A\, Deutschland
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240130T160000
DTEND;TZID=Europe/Berlin:20240130T170000
DTSTAMP:20260423T142859
CREATED:20231009T105559Z
LAST-MODIFIED:20240123T160326Z
UID:6420-1706630400-1706634000@crc326gaus.de
SUMMARY:Six-dimensional sphere packing and linear programming
DESCRIPTION:International Seminar on Automorphic Forms \nMatthew de Courcy-Ireland (Stockholm University) \nThis talk is based on joint work with Maria Dostert and Maryna Viazovska. We prove that the Cohn–Elkies linear programming bound is not sharp for sphere packing in dimension 6. This is in contrast to Viazovska’s sharp bound in dimension 8\, even though it is believed that closely related lattices achieve the optimal densities in both dimensions. The proof uses modular forms to construct feasible points in a dual program\, generalizing a construction of Cohn and Triantafillou to the case of odd weight and non-trivial Dirichlet character. Non-sharpness of linear programming is demonstrated by comparing this dual bound to a stronger upper bound obtained from semidefinite programming by Cohn\, de Laat\, and Salmon. Our construction has vanishing Fourier coefficients along an arithmetic progression\, which can be explained using skew self-adjointness of Hecke operators. \nYou can join the Zoom meeting at https://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-71/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240126T160000
DTEND;TZID=Europe/Berlin:20240126T170000
DTSTAMP:20260423T142859
CREATED:20231221T132521Z
LAST-MODIFIED:20240123T144823Z
UID:7519-1706284800-1706288400@crc326gaus.de
SUMMARY:Category of matroids with coefficients
DESCRIPTION:TGiF-Seminar: Tropical geometry in Frankfurt (Second meeting Winter Semester 2023/24) \nCancelled: postponed to February 02 \nManoel Zanoelo Jarra (Universität Groningen) \nAbstract: Matroids are combinatorial abstractions of the concept of independence in linear algebra. There is a way back: when representing a matroid over a field we get a linear subspace. Another algebraic object for which we can represent matroids is the semifield of tropical numbers\, which gives us valuated matroids. In this talk we introduce Baker-Bowler’s theory of matroids with coefficients\, which recovers both classical and valuated matroids\, as well linear subspaces\, and we show how to give a categorical treatment to these objects that respects matroidal constructions\, as minors and duality. This is a joint work with Oliver Lorscheid and Eduardo Vital.
URL:https://crc326gaus.de/event/tba-95/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240126T153000
DTEND;TZID=Europe/Berlin:20240126T170000
DTSTAMP:20260423T142859
CREATED:20231016T111405Z
LAST-MODIFIED:20240117T141441Z
UID:6706-1706283000-1706288400@crc326gaus.de
SUMMARY:Doing geometry by counting points
DESCRIPTION:Seminar on Arithmetic Geometry \nPaul Ziegler (TU Darmstadt) \nFor a family of polynomials in several variables with integral coefficients\, the Weil conjectures give a surprising relationship between the geometry of the complex-valued roots of these polynomials and the number of roots of these polynomials “modulo p”. I will give an introduction to this circle of results and an application motivated by the concept of mirror symmetry from physics. \nZoom (635 7328 0984\, Password: smallest six digit prime).
URL:https://crc326gaus.de/event/tba-90/
LOCATION:Darmstadt\, Room 244 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Sabrina Pauli":MAILTO:pauli@mathematik.tu-darmstadt.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240126T143000
DTEND;TZID=Europe/Berlin:20240126T153000
DTSTAMP:20260423T142859
CREATED:20240108T113933Z
LAST-MODIFIED:20240123T144642Z
UID:7541-1706279400-1706283000@crc326gaus.de
SUMMARY:Hard Lefschetz theorem and Hodge-Riemann relations for convex valuations
DESCRIPTION:TGiF-Seminar: Tropical geometry in Frankfurt (Second meeting Winter Semester 2023/24) \nCancelled: postponed to February 02 \nAndreas Bernig (Goethe-Universität Frankfurt) \nAbstract: The hard Lefschetz theorem and the Hodge-Riemann relations have their origin in the cohomology theory of compact Kähler manifolds. In recent years it has become clear that similar results hold in many different settings\, in particular in algebraic geometry and combinatorics (work by Adiprasito\, Huh and others). In a recent joint work with Jan Kotrbatý and Thomas Wannerer\, we prove the hard Lefschetz theorem and Hodge-Riemann relations for valuations on convex bodies. These results can be translated into an array of quadratic inequalities for mixed volumes of smooth convex bodies\, giving a smooth analogue of the quadratic inequalities in McMullen’s polytope algebra. Surprinsingly\, these inequalities fail for general convex bodies. Our proof uses elliptic operators and perturbation theory of unbounded operators.
URL:https://crc326gaus.de/event/hard-lefschetz-theorem-and-hodge-riemann-relations-for-convex-valuations/
LOCATION:Frankfurt\, Robert-Mayer-Str. 10\, Raum 711 groß
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240126T101500
DTEND;TZID=Europe/Berlin:20240126T114500
DTSTAMP:20260423T142859
CREATED:20231121T124951Z
LAST-MODIFIED:20240110T141537Z
UID:7185-1706264100-1706269500@crc326gaus.de
SUMMARY:Exodromy
DESCRIPTION:Alisa Kannen (Universität Mainz): Stratified higher topoi
URL:https://crc326gaus.de/event/exodromy-12/
LOCATION:Mainz\, Raum 05-514
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240126T091500
DTEND;TZID=Europe/Berlin:20240126T104500
DTSTAMP:20260423T142859
CREATED:20240110T134027Z
LAST-MODIFIED:20240110T134027Z
UID:7568-1706260500-1706265900@crc326gaus.de
SUMMARY:Rigid meromorphic cocycles
DESCRIPTION:Oğuz Gezmiş (Universität Heidelberg): The RM values of the Dedekind–Rademacher cocycle
URL:https://crc326gaus.de/event/rigid-meromorphic-cocycles-11/
LOCATION:Heidelberg\, Mathematikon\, SR 8 und Zoom\, Germany
CATEGORIES:GAUS-AG
ORGANIZER;CN="O%C4%9Fuz Gezmi%C5%9F":MAILTO:oguz.gezmis@iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240125T170000
DTEND;TZID=Europe/Berlin:20240125T180000
DTSTAMP:20260423T142859
CREATED:20231012T090458Z
LAST-MODIFIED:20240514T072156Z
UID:6654-1706202000-1706205600@crc326gaus.de
SUMMARY:CRC-Colloquium
DESCRIPTION:15:30 Uhr Ben Heuer (Universität Frankfurt): p-adic non-abelian Hodge theory for non-p-adic mathematicians\n16:30 Coffee and Cake\n17:00 Uhr Jan Bruinier (TU Darmstadt): Theta functions in geometry and arithmetic\n18:30 Uhr: Dinner \nAbstract B. Heuer:\nIn p-adic non-abelian Hodge theory\, we study p-adic representations of fundamental groups of projective varieties. This talk will give an introduction to this subject without assuming any background in p-adic geometry. Based on examples\, I will explain the “p-adic Simpson correspondence”\, with an emphasis on the relation to complex geometry. I will discuss recent advances\, the main open questions in the area\, and potential applications to complex geometry. \nAbstract J. Brunier:\nWe explain how theta functions can be used to study positive definite quadratic forms and their representation numbers. For indefinite quadratic forms\, Kudla and Millson showed that there are analogous theta functions relating the geometry of special cycles on locally symmetric spaces to modular forms. Conjectures of Kudla predict similar results for arithmetic special cycles in Arakelov Chow groups on integral models of orthogonal Shimura varieties. We will also report on some recent results in this context. \nZoom Meeting-ID: 967 5163 9626 \nPasscode: last name of famous mathematician born in Königsberg (small letters)
URL:https://crc326gaus.de/event/tba-79/
LOCATION:Mainz\, Raum 05-426
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240125T110000
DTEND;TZID=Europe/Berlin:20240125T130000
DTSTAMP:20260423T142859
CREATED:20231010T133151Z
LAST-MODIFIED:20231120T155459Z
UID:6541-1706180400-1706187600@crc326gaus.de
SUMMARY:Emerton-Gee-Stacks
DESCRIPTION:Talk 11: Thibaud van den Hove (TU Darmstadt): Crystalline Stacks
URL:https://crc326gaus.de/event/emerton-gee-stacks-11/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240123T140000
DTEND;TZID=Europe/Berlin:20240123T150000
DTSTAMP:20260423T142859
CREATED:20231220T150741Z
LAST-MODIFIED:20231220T151059Z
UID:7510-1706018400-1706022000@crc326gaus.de
SUMMARY:Étale cohomology of the moduli stack of rank 2 vector bundles on the Fargues-Fontaine curve
DESCRIPTION:Seminar: Non-archimedean geometry \nRuth Wild (Universität Bonn) \nAbstract: Motivated by classical calculations\, we consider the problem of calculating the etale cohomology of the moduli stack Bun<sub>2</sub> of rank 2 vector bundles on the Fargues-Fontaine curve\, as introduced by Fargues and Scholze in their geometrization of the Local Langlands correspondence. We achive this by analyzing a stratafication of this stack and the simple cohomological behavior of the different strata. Along the way\, we prove the description of the dualizing sheaf on Bun<sub>2</sub>.
URL:https://crc326gaus.de/event/etale-cohomology-of-the-moduli-stack-of-rank-2-vector-bundles-on-the-fargues-fontaine-curve/
LOCATION:Frankfurt\, Rober-Mayer-Str. 10\, Raum 711 klein
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240123T090000
DTEND;TZID=Europe/Berlin:20240123T100000
DTSTAMP:20260423T142859
CREATED:20231009T105405Z
LAST-MODIFIED:20240109T101527Z
UID:6417-1706000400-1706004000@crc326gaus.de
SUMMARY:The BZSV duality and the relative Langlands program
DESCRIPTION:International Seminar on Automorphic Forms \nWee Teck Gan (National University of Singapore) \nI will discuss a duality of Hamiltonian group varieties proposed in a recent preprint of Ben-Zvi\, Sakellaridis and Venkatesh\, which gives a new paradigm for the relative Langlands program.\nI will then discuss a joint work with Bryan Wang on instances of this duality for certain Hamiltonian varieties which quantize to generalized Whittaker models. \nYou can join the Zoom meeting at https://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-70/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240119T153000
DTEND;TZID=Europe/Berlin:20240119T170000
DTSTAMP:20260423T142859
CREATED:20231016T111231Z
LAST-MODIFIED:20240112T073106Z
UID:6704-1705678200-1705683600@crc326gaus.de
SUMMARY:Enumerating motivic nearby cycles
DESCRIPTION:Seminar on Arithmetic Geometry \nRan Azouri (Sorbonne Paris North University) \nA^1 homotopy theory provides tools to refine geometric invariants on integers to quadratic forms. A key such invariant is the quadratic Euler characteristic; Ayoub’s motivic nearby cycles provide a tool to study singularities in the world of A^1 homotopy.\nIn the talk I will explain how to compute the quadratic Euler characteristic on the motivic nearby cycles spectrum around certain singularities\, using an explicit semistable reduction construction. This\, together with a work of Levine\, Pepin Lehalleur and Srinivas\, adds up to a quadratic conductor formula on schemes with semi-quasihomogeneous singularities\, refining formulas of Milnor and Deligne.\nLater I will describe how\, in a work in progress with Emil Jacobsen\, we use a similar semistable reduction argument to compute the motivic monodromy on nearby cycles\, generalising to motives the Picard-Lefschetz formula of Deligne and Katz. \nZoom (635 7328 0984\, Password: smallest six digit prime).
URL:https://crc326gaus.de/event/tba-89/
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:20240119T140000
DTEND;TZID=Europe/Berlin:20240119T180000
DTSTAMP:20260423T142859
CREATED:20231123T090322Z
LAST-MODIFIED:20231123T090429Z
UID:7232-1705672800-1705687200@crc326gaus.de
SUMMARY:Conformal Field Theory
DESCRIPTION:14:00-15:00: Britta Spät (University of Wuppertal): On the McKay Conjecture \n15:15-16:15: Ida Zadeh (Johannes Gutenberg University Mainz): Mathieu Moonshine and T4/Z3 sigma-models \n17:00-18:00: David Reutter (University of Hamburg): A braided tensor 2-category from link homology
URL:https://crc326gaus.de/event/conformal-field-theory/
LOCATION:Darmstadt\, Room S214/24
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240119T101500
DTEND;TZID=Europe/Berlin:20240119T114500
DTSTAMP:20260423T142859
CREATED:20231121T124824Z
LAST-MODIFIED:20240110T142026Z
UID:7183-1705659300-1705664700@crc326gaus.de
SUMMARY:Exodromy
DESCRIPTION:Klaus Mattis (Universität Mainz): Gluing squares
URL:https://crc326gaus.de/event/exodromy-11/
LOCATION:Mainz\, Raum 05-514
CATEGORIES:GAUS-AG
ORGANIZER;CN="Tom Bachmann":MAILTO:tom.bachmann@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240119T091500
DTEND;TZID=Europe/Berlin:20240119T104500
DTSTAMP:20260423T142859
CREATED:20240110T133609Z
LAST-MODIFIED:20240110T134202Z
UID:7566-1705655700-1705661100@crc326gaus.de
SUMMARY:Rigid meromorphic cocycles
DESCRIPTION:Lucas Gerth (Universität Frankfurt): Diagonal restrictions of p-adic Eisenstein families
URL:https://crc326gaus.de/event/rigid-meromorphic-cocycles-10/
LOCATION:Heidelberg\, Mathematikon\, SR 8 und Zoom\, Germany
CATEGORIES:GAUS-AG
ORGANIZER;CN="O%C4%9Fuz Gezmi%C5%9F":MAILTO:oguz.gezmis@iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240118T150000
DTEND;TZID=Europe/Berlin:20240118T163000
DTSTAMP:20260423T142859
CREATED:20231009T095724Z
LAST-MODIFIED:20240110T132631Z
UID:6392-1705590000-1705595400@crc326gaus.de
SUMMARY:Rigid Analytic Motives
DESCRIPTION:Talk 10: Can Yaylali (TU Darmstadt): Weight Structures \nZoom meeting ID: 612 2072 7363\, Password: Largest six digit prime number.
URL:https://crc326gaus.de/event/rigid-analytic-motives-26/
LOCATION:Darmstadt\, Room 244 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240118T110000
DTEND;TZID=Europe/Berlin:20240118T130000
DTSTAMP:20260423T142859
CREATED:20231010T132914Z
LAST-MODIFIED:20231121T150752Z
UID:6539-1705575600-1705582800@crc326gaus.de
SUMMARY:Emerton-Gee-Stacks
DESCRIPTION:Talk 10: Annie Littler (Universität Heidelberg): Moduli stacks of (φ\, Γ)-modules IV – trianguline rank two case
URL:https://crc326gaus.de/event/emerton-gee-stacks-10/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20240116T160000
DTEND;TZID=Europe/Berlin:20240116T170000
DTSTAMP:20260423T142859
CREATED:20231009T105238Z
LAST-MODIFIED:20231221T093008Z
UID:6415-1705420800-1705424400@crc326gaus.de
SUMMARY:Automorphism group of Cartan modular curves
DESCRIPTION:International Seminar on Automorphic Forms \nPietro Mercuri (University of Rome – La Sapienza) \nWe consider the modular curves associated to a Cartan subgroup of GL(2\,Z/nZ) or to a particular class of subgroups of GL(2\,Z/nZ) containing the Cartan subgroup as a normal subgroup. We describe the automorphism group of these curves when the level is large enough. If time permits\, we give a sketch of the proof. \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-69/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
END:VCALENDAR