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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241129T153000
DTEND;TZID=Europe/Berlin:20241129T170000
DTSTAMP:20260423T113337
CREATED:20241016T112643Z
LAST-MODIFIED:20241119T072742Z
UID:9356-1732894200-1732899600@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Felipe Espreafico (IMJ-PRG): Gauss-Main Connection in Disguise: A «quasi-modularity» for Gromov-Witten invariants for the Quintic Threefold \nGromov-Witten invariants and modularity are topics that often come together. In this talk\, we will explore a type of quasi-modularity for the genus zero invariants for the quintic threefold. We start by explaining how classical Eisenstein series are related to periods of the Weistrass family of Elliptic Curves. A similar relation may be observed by looking at periods of the mirror quintic family: that generating functions for the genus zero invariants can be written in terms of solutions to certain differential systems coming from the Gauss-Manin connection that generalize the classical Ramanujan equations that give rise to Eisenstein series. This is part of larger program called Gauss-Manin connection in Disguise\, that can be also applied in other contexts. We finish by briefly discussing other applications and further questions. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-15/
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:20241129T133000
DTEND;TZID=Europe/Berlin:20241129T143000
DTSTAMP:20260423T113337
CREATED:20241119T102406Z
LAST-MODIFIED:20241125T105040Z
UID:9903-1732887000-1732890600@crc326gaus.de
SUMMARY:The degree of algebraic cycles on hypersurfaces
DESCRIPTION:Matthias Paulsen (Universität Marburg) \nAbstract: Let X be a very general hypersurface of dimension 3 and degree d at least 6. Griffiths and Harris conjectured in 1985 that the degree of every curve on X is divisible by d. Substantial progress on this conjecture was made by Kollár in 1991 via degeneration arguments. However\, the conjecture of Griffiths and Harris remained open in any degree d. In this talk\, I will explain how to prove this conjecture (and its higher-dimensional analogues) for infinitely many degrees d.
URL:https://crc326gaus.de/event/the-degree-of-algebraic-cycles-on-hypersurfaces/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241129T103000
DTEND;TZID=Europe/Berlin:20241129T113000
DTSTAMP:20260423T113337
CREATED:20241111T143705Z
LAST-MODIFIED:20241122T141045Z
UID:9821-1732876200-1732879800@crc326gaus.de
SUMMARY:Quantum periods\, toric degenerations and intrinsic mirror symmetry
DESCRIPTION:Samuel M Johnston\, Heilbronn Research Fellow at Imperial College London
URL:https://crc326gaus.de/event/tba-126/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 11\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241129T090000
DTEND;TZID=Europe/Berlin:20241129T110000
DTSTAMP:20260423T113337
CREATED:20241211T123331Z
LAST-MODIFIED:20241211T123335Z
UID:10145-1732870800-1732878000@crc326gaus.de
SUMMARY:Congruence Modules and the Wiles–Lenstra–Diamond Numerical Criterion in Higher Codimension
DESCRIPTION:Theresa Kaiser (Universität Heidelberg): Cohen–Macaulay modules and complete intersection rings
URL:https://crc326gaus.de/event/congruence-modules-and-the-wiles-lenstra-diamond-numerical-criterion-in-higher-codimension-3/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241128T153000
DTEND;TZID=Europe/Berlin:20241128T183000
DTSTAMP:20260423T113337
CREATED:20240813T094606Z
LAST-MODIFIED:20241016T115553Z
UID:9041-1732807800-1732818600@crc326gaus.de
SUMMARY:CRC-Colloquium
DESCRIPTION:15:20 Coffee (or earlier)\n15:30 – 16:30 Timo Richarz (TU Darmstadt): Reduction of Shimura Varieties\n16:30 Coffee and Cake\n17:15 – 18:15 Jens Eberhardt (Universität Mainz): K-motives and Local Langlands\n18:45 Dinner \nAbstract – Timo Richarz: Reduction of Shimura Varieties\nThe general theory of Shimura varieties\, first developed by Deligne in the 1970s\, extends classical objects such as modular curves\, moduli of polarized abelian varieties and Hilbert-Blumenthal varieties. The varieties play a crucial role in the search for higher reciprocity laws within the Langlands program. The arithmetic properties of Shimura varieties\, in particular their reduction to positive characteristic\, have enabled remarkable advances in arithmetic geometry in recent decades. In this talk\, I will give an overview of recent results concerning the geometry of Shimura varieties in their reduction to positive characteristic. \nAbstract – Jens Eberhardt: K-motives and Local Langlands\nIn this talk\, we construct a geometric realisation of the category of representations of the affine Hecke algebra. For this\, we introduce a formalism of K-theoretic sheaves (called K-motives) on stacks. The affine Hecke algebra arises from the K-theory of the Steinberg stack\, and we explain how to “categorify” this using K-motives. Lastly\, we discuss applications of K-motives to the local geometric Langlands program.
URL:https://crc326gaus.de/event/crc-colloquium-copy01/
LOCATION:Heidelberg\, MATHEMATIKON\, Konferenzraum\, 5. OG\, Campus Im Neuenheimer Feld (INF)\, INF 205\, Heidelberg\, 69120\, Germany
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241128T111500
DTEND;TZID=Europe/Berlin:20241128T124500
DTSTAMP:20260423T113337
CREATED:20241105T134506Z
LAST-MODIFIED:20241105T134506Z
UID:9682-1732792500-1732797900@crc326gaus.de
SUMMARY:The direct summand theorem
DESCRIPTION:Talk 7: Marlon Kocher (Universität Heidelberg): Perfectoid spaces I: Tilting of Rational Subsets
URL:https://crc326gaus.de/event/the-direct-summand-theorem-4/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241127T160000
DTEND;TZID=Europe/Berlin:20241127T170000
DTSTAMP:20260423T113337
CREATED:20241025T145444Z
LAST-MODIFIED:20241025T150057Z
UID:9569-1732723200-1732726800@crc326gaus.de
SUMMARY:Oberseminar Algebra und Geometrie
DESCRIPTION:Jiaming Chen (Universität Frankfurt): Convex Fujita numbers \nAbstract: I will discuss joint work with Alex Küronya\, Yusuf Mustopa\, and Jakob Stix on the effective global generation of adjoint line bundles on smooth projective varieties. To measure effectiveness\, we introduce the concept of the convex Fujita number of a smooth projective variety. I will present several examples and explore its relation to fundamental groups.
URL:https://crc326gaus.de/event/oberseminaralgebrageometrie-convex-fujita-numbers/
LOCATION:Frankfurt\, RM-Str. 6-8\, R. 308
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241127T120000
DTEND;TZID=Europe/Berlin:20241127T130000
DTSTAMP:20260423T113337
CREATED:20241121T072154Z
LAST-MODIFIED:20241121T072154Z
UID:9930-1732708800-1732712400@crc326gaus.de
SUMMARY:Hodge Theory
DESCRIPTION:Luca Passolunghi (Universität Mainz): Kähler manifolds I
URL:https://crc326gaus.de/event/hodge-theory/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241126T160000
DTEND;TZID=Europe/Berlin:20241126T170000
DTSTAMP:20260423T113337
CREATED:20241016T114654Z
LAST-MODIFIED:20241120T071853Z
UID:9388-1732636800-1732640400@crc326gaus.de
SUMMARY:Knots\, q-series\, and modular forms
DESCRIPTION:International Seminar on Automorphic Forms \nMatthias Storzer (University College Dublin): Knots\, q-series\, and modular forms \nTo study knots\, we use knot invariants like the colored Jones polynomials (CJP). For alternating knots\, it is known that the CJP converge to a well-defined q-series\, the tail of the CJP. For several but not all knots with up to 10 crossings\, the tail of the CJP can be written as a product of (partial) theta functions and thus has modular properties. In this talk\, we present a general formula for a class of knots.Moreover\, we argue that the tail of the CJP for some knots does not have any modular properties. We also briefly discuss potential topological interpretations of the (non-)modularity.This is joint work with Robert Osburn. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits) \n 
URL:https://crc326gaus.de/event/tba-120/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241126T140000
DTEND;TZID=Europe/Berlin:20241126T153000
DTSTAMP:20260423T113337
CREATED:20241108T102930Z
LAST-MODIFIED:20241108T102930Z
UID:9765-1732629600-1732635000@crc326gaus.de
SUMMARY:Vector bundles on curves
DESCRIPTION:Saskia Kern : Harder–Narasimhan filtration \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/vector-bundles-on-curves-5/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241122T153000
DTEND;TZID=Europe/Berlin:20241122T170000
DTSTAMP:20260423T113337
CREATED:20241016T112540Z
LAST-MODIFIED:20241114T073128Z
UID:9355-1732289400-1732294800@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Andrés Jaramillo Puentes (Universität Tübngen): A Wall-Crossing Formula for Motivic Gromov-Witten Invariants \nIn enumerative geometry\, Gromov-Witten invariants play a central role in counting curves on algebraic varieties\, and their variations under different conditions provide a rich framework for understanding moduli spaces. In recent years\, there has been significant progress in developing enriched versions of these invariants within the framework of motivic homotopy theory\, leading to what we now call motivic Gromov-Witten invariants. Motivic invariants encode additional algebraic structure over the Grothendieck-Witt ring of a base field\, allowing for finer distinctions in curve counts\, particularly over fields with nontrivial real structure. \nIn this talk\, we discuss a wall-crossing formula for motivic Gromov-Witten invariants. Specifically\, we explore how variations in point conditions and configurations influence the values of these invariants\, and demonstrate how these changes can be systematically tracked using a motivic analogue of classical wall-crossing phenomena. We will illustrate how this formula provides a mechanism to relate invariants associated with distinct configurations by tracking contributions along certain “walls” in the parameter space\, which play an analogous role to wall-crossing in real enumerative geometry. \nAdditionally\, we will present applications of this formula to specific enumerative problems\, showcasing how the motivic perspective not only recovers known real and complex cases but also opens new pathways for counting problems over arbitrary fields. This development lays the groundwork for future research\, providing a powerful tool to bridge combinatorial and motivic techniques in tropical and algebraic geometry. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-14/
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:20241122T141500
DTEND;TZID=Europe/Berlin:20241122T151500
DTSTAMP:20260423T113337
CREATED:20241115T214100Z
LAST-MODIFIED:20241126T102247Z
UID:9870-1732284900-1732288500@crc326gaus.de
SUMMARY:Tropical refined curve counting and mirror symmetry
DESCRIPTION:Qaasim Shafi (Heidelberg) \nAn old theorem\, due to Mikhalkin\, says that the number of\nrational plane curves of degree d through 3d-1 points is equal to a\ncount of tropical curves (combinatorial objects which are more amenable\nto computations). There are two natural directions for generalising this\nresult: extending to higher genus curves and allowing for more general\nconditions than passing through points. I’ll discuss a generalisation\nwhich does both\, as well as recent work connecting it to mirror symmetry\nfor log Calabi-Yau surfaces. This is joint work with Patrick\nKennedy-Hunt and Ajith Urundolil Kumaran. \nhttps://sites.google.com/view/heidelbergag/algebraic-geometry-seminar
URL:https://crc326gaus.de/event/tropical-refined-curve-counting-and-mirror-symmetry/
LOCATION:Heidelberg
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241122T133000
DTEND;TZID=Europe/Berlin:20241122T143000
DTSTAMP:20260423T113337
CREATED:20241113T101011Z
LAST-MODIFIED:20241126T102149Z
UID:9829-1732282200-1732285800@crc326gaus.de
SUMMARY:Heights of modular polynomials
DESCRIPTION:Prof. Dr. Florian Breuer (University of Newcastle) \nFor every positive integer $N$\, the modular polynomial $\Phi_N(X\,Y)$ has integer coefficients and vanishes precisely at pairs of $j$-invariants of elliptic curves linked by a cyclic isogeny of order $N$. These polynomials have applications in cryptography and define integral (but singular) models for the modular curves $X_0(N)$. Their coefficients grow rapidly with $N$. In this talk\, I will explain recent joint work with Fabien Pazuki and Desir\’ee Gij\’on G\’omez obtaining explicit upper and lower bounds on the size of these coefficients. Our methods also lead to explicit bounds on the heights of Hecke images. If time allows\, I can also outline analogous results for Drinfeld modular polynomials.
URL:https://crc326gaus.de/event/heights-of-modular-polynomials/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Gebhard B%C3%B6ckle":MAILTO:gebhard.boeckle iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241122T103000
DTEND;TZID=Europe/Berlin:20241122T113000
DTSTAMP:20260423T113337
CREATED:20241111T132603Z
LAST-MODIFIED:20241126T102342Z
UID:9817-1732271400-1732275000@crc326gaus.de
SUMMARY:Differential operators on automorphic forms\, special functions\, and arithmetic applications
DESCRIPTION:Tomoyoshi Ibukiyama\, Professor Emeritus Department of Mathematics Graduate School of Science\, Osaka University \nA theory of differential operators on automorphic forms\nwhich preserve automorphy after restrictions of\nthe domains have a long history and turned out\nto include a nice theory of special functions.\nWe will give rough outline on results\nsince 1990 (partly a joint work with D. Zagier) and\nexplain several arithmetic applications.
URL:https://crc326gaus.de/event/differential-operators-on-automorphic-forms-special-functions-and-arithmetic-applications/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 11\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241122T090000
DTEND;TZID=Europe/Berlin:20241122T110000
DTSTAMP:20260423T113337
CREATED:20241211T123151Z
LAST-MODIFIED:20241211T123151Z
UID:10143-1732266000-1732273200@crc326gaus.de
SUMMARY:Congruence Modules and the Wiles–Lenstra–Diamond Numerical Criterion in Higher Codimension
DESCRIPTION:Alireza Shavali (Universität Heidelberg): Congruence modules and Wiles defect
URL:https://crc326gaus.de/event/congruence-modules-and-the-wiles-lenstra-diamond-numerical-criterion-in-higher-codimension-2/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241121T140000
DTEND;TZID=Europe/Berlin:20241121T173000
DTSTAMP:20260423T113337
CREATED:20241105T090649Z
LAST-MODIFIED:20241120T134713Z
UID:9642-1732197600-1732210200@crc326gaus.de
SUMMARY:Anabelian geometry - Mochizuki’s proof of the Hom-Conjecture [d’après Faltings]
DESCRIPTION:14:00 – 15:30 Talk 3: Leonie Scherer (Goethe Universität): Unipotent Tannakian categories
URL:https://crc326gaus.de/event/anabelian-geometry-mochizukis-proof-of-the-hom-conjecture-dapres-faltings/
LOCATION:Heidelberg
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241121T111500
DTEND;TZID=Europe/Berlin:20241121T124500
DTSTAMP:20260423T113337
CREATED:20241105T131509Z
LAST-MODIFIED:20241114T135904Z
UID:9680-1732187700-1732193100@crc326gaus.de
SUMMARY:The direct summand theorem
DESCRIPTION:Talk 6: Yanik Kleibrink (Universität Frankfurt): Adic spaces II
URL:https://crc326gaus.de/event/the-direct-summand-theorem-3/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241120T120000
DTEND;TZID=Europe/Berlin:20241120T133000
DTSTAMP:20260423T113337
CREATED:20241107T105518Z
LAST-MODIFIED:20241111T090646Z
UID:9745-1732104000-1732109400@crc326gaus.de
SUMMARY:Hodge Theory
DESCRIPTION:Andreas Gieringer (Universität Mainz): Harmonic forms I
URL:https://crc326gaus.de/event/harmonic-forms-i/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241119T160000
DTEND;TZID=Europe/Berlin:20241119T170000
DTSTAMP:20260423T113337
CREATED:20241016T114537Z
LAST-MODIFIED:20241108T080337Z
UID:9382-1732032000-1732035600@crc326gaus.de
SUMMARY:Cones of Noether-Lefschetz divisors and moduli of hyperkähler manifolds
DESCRIPTION:International Seminar on Automorphic Forms \nLaure Flapan (Michigan State University): Cones of Noether-Lefschetz divisors and moduli of hyperkähler manifolds \nWe describe how to compute cones of Noether-Lefshetz divisors on orthogonal modular varieties with a particular view towards moduli spaces of polarized K3 surfaces and hyperkähler manifolds. We then describe some geometric applications of these cone computations for these moduli spaces. This is joint work with I. Barros\, P. Beri\, and B. Williams. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits) \n 
URL:https://crc326gaus.de/event/tba-119/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241119T140000
DTEND;TZID=Europe/Berlin:20241119T153000
DTSTAMP:20260423T113337
CREATED:20241108T102833Z
LAST-MODIFIED:20241108T102833Z
UID:9764-1732024800-1732030200@crc326gaus.de
SUMMARY:Vector bundles on curves
DESCRIPTION:Michelle Klemt : Vector bundles on curves of low genus \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/vector-bundles-on-curves-4/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241115T153000
DTEND;TZID=Europe/Berlin:20241115T170000
DTSTAMP:20260423T113337
CREATED:20241016T112344Z
LAST-MODIFIED:20241104T123602Z
UID:9353-1731684600-1731690000@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Ludwig Modin (Leibniz Universität Hannover): Moduli spaces for Theta-strata and non-reductive quotients \nThe U-hat theorem of Bérczi\, Doran\, Hawes and Kirwan gives conditions for when a linear action of a complex graded unipotent group admits a geometric quotient\, it is one of the key results non-reductive geometric invariant theory is built on.\nWe give a stacky re-interpretation of this theorem in terms of Theta-strata\, as introduced by Halpern-Leistner\, of algebraic stacks. As a corollary we generalize the U-hat theorem to not necessarily linear actions of graded unipotent groups over a Noetherian base scheme. \nZoom (635 7328 0984)\, Kenncode: kleinste sechsstellige Primzahl
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-13/
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:20241115T133000
DTEND;TZID=Europe/Berlin:20241115T150000
DTSTAMP:20260423T113337
CREATED:20241106T133148Z
LAST-MODIFIED:20241126T102031Z
UID:9724-1731677400-1731682800@crc326gaus.de
SUMMARY:Antisymmetry in the theory of rigid meromorphic cocycles
DESCRIPTION:Sören Sprehe (Universität Bielefeld) \nAround six years ago Darmon and Vonk initiated the theory of p-adic singular moduli for real quadratic fields by defining “rigid meromorphic cocycles”. These are elements of the first cohomology group of Ihara’s group SL2(Z[1/p]) with values in the group of rigid meromorphic functions on Drinfeld’s upper half-plane. Using rigid meromorphic cocycles\, Darmon and Vonk assign to each pair of real quadratic irrationalities a p-adic number. The two irrationalities play a vastly different role in the construction of this assignment. However\, it is expected to behave like the difference of two classical singular moduli – in particular\, it should be anti-symmetric in the argument. We will use the recent work of Darmon\, Gehrmann and Lipnowski on rigid meromorphic cocycles for higher dimensional orthogonal groups to give a new\, symmetric construction of this function.
URL:https://crc326gaus.de/event/antisymmetry-in-the-theory-of-rigid-meromorphic-cocycles/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Gebhard B%C3%B6ckle":MAILTO:gebhard.boeckle iwr.uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241115T111500
DTEND;TZID=Europe/Berlin:20241115T121500
DTSTAMP:20260423T113337
CREATED:20241108T101412Z
LAST-MODIFIED:20241126T101943Z
UID:9752-1731669300-1731672900@crc326gaus.de
SUMMARY:Jacobi forms\, mock modular forms and qMZVs in enumerative geometry
DESCRIPTION:Jan-Willem van Ittersum (Cologne) \nAbstract: There are several instances where Gromov-Witten invariants can be expressed in terms of (quasi)Jacobi forms. In other examples in enumerative geometry\, one also encounters mock modular forms or even q-analogues of multiple zeta values. We explain the origin and properties of these series and provide examples of their occurrences as generating series of geometrical invariants.\n\nhttps://sites.google.com/view/heidelbergag/algebraic-geometry-seminar
URL:https://crc326gaus.de/event/jacobi-forms-mock-modular-forms-and-qmzvs-in-enumerative-geometry/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 11\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241115T090000
DTEND;TZID=Europe/Berlin:20241115T110000
DTSTAMP:20260423T113337
CREATED:20241211T123001Z
LAST-MODIFIED:20241211T123001Z
UID:10140-1731661200-1731668400@crc326gaus.de
SUMMARY:Congruence Modules and the Wiles–Lenstra–Diamond Numerical Criterion in Higher Codimension
DESCRIPTION:Andrea Conti (Universität Heidelberg): Overview
URL:https://crc326gaus.de/event/congruence-modules-and-the-wiles-lenstra-diamond-numerical-criterion-in-higher-codimension/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241114T140000
DTEND;TZID=Europe/Berlin:20241114T163000
DTSTAMP:20260423T113337
CREATED:20241105T092227Z
LAST-MODIFIED:20241105T092227Z
UID:9651-1731592800-1731601800@crc326gaus.de
SUMMARY:Moduli of Quiver Representations and GIT Quotients
DESCRIPTION:14:00 – 15:00 Talk 2.1: Nicole Müller (Goethe Universität): Affine GIT \nCoffee break \n15:30 – 16:30 Talk 2.2: Felix Göbler (Goethe Universität): Projective GIT
URL:https://crc326gaus.de/event/moduli-of-quiver-representations-and-git-quotients-2/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241114T111500
DTEND;TZID=Europe/Berlin:20241114T124500
DTSTAMP:20260423T113337
CREATED:20241105T131134Z
LAST-MODIFIED:20241105T131134Z
UID:9678-1731582900-1731588300@crc326gaus.de
SUMMARY:The direct summand theorem
DESCRIPTION:Talk 5: Lars Wüste-Schmülling (Universität Heidelberg): Adic spaces I
URL:https://crc326gaus.de/event/the-direct-summand-theorem-2/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241113T120000
DTEND;TZID=Europe/Berlin:20241113T133000
DTSTAMP:20260423T113337
CREATED:20241107T105323Z
LAST-MODIFIED:20241111T090419Z
UID:9743-1731499200-1731504600@crc326gaus.de
SUMMARY:Hodge Theory
DESCRIPTION:Timon Tausendpfund (Universität Mainz): Kähler metrics
URL:https://crc326gaus.de/event/kahler-metrics/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241112T160000
DTEND;TZID=Europe/Berlin:20241112T170000
DTSTAMP:20260423T113337
CREATED:20241016T114448Z
LAST-MODIFIED:20241105T091814Z
UID:9381-1731427200-1731430800@crc326gaus.de
SUMMARY:On an extension of the Rohrlich-Jensen formula
DESCRIPTION:International Seminar on Automorphic Forms \nLeila Smajlovic (University of Sarajevo): On an extension of the Rohrlich-Jensen formula \nWe revisit the Rohrlich-Jensen formula and prove that\, in the case of any Fuchsian group of the first kind with one cusp it can be viewed as a regularized inner product of special values of two Poincaré series\, one of which is the Niebur-Poincaré series and the other is the resolvent kernel of the Laplacian. The regularized inner product can be seen as a type of Maass-Selberg relation. In this form\, we develop a Rohrlich-Jensen formula associated to any Fuchsian group Γ of the first kind with one cusp by employing a type of Kronecker limit formula associated to the resolvent kernel. We present two examples of our main result: First\, when Γ is the full modular group; and second when Γ is an Atkin-Lehner group Γ0(N)+. This work is joint with James Cogdell and Jay Jorgenson. \nhttps://tu-darmstadt.zoom.us/j/68048280736 \nThe password is the first Fourier coefficient of the modular j-function (as digits) \n 
URL:https://crc326gaus.de/event/tba-118/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241112T140000
DTEND;TZID=Europe/Berlin:20241112T153000
DTSTAMP:20260423T113337
CREATED:20241108T102637Z
LAST-MODIFIED:20241108T102637Z
UID:9760-1731420000-1731425400@crc326gaus.de
SUMMARY:Vector bundles on curves
DESCRIPTION:Mingkuan Zhang: Construction of vector bundles \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/vector-bundles-on-curves-3/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241108T153000
DTEND;TZID=Europe/Berlin:20241108T170000
DTSTAMP:20260423T113337
CREATED:20240909T081457Z
LAST-MODIFIED:20241021T103300Z
UID:9174-1731079800-1731085200@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Siyan Daniel Li-Huerta (MPIM Bonn): Close fields and the local Langlands correspondence \nThere is a heuristic that\, as ramification goes to infinity\, p-adic fields tend to function fields. For Galois representations\, this was made precise by Deligne\, and for representations of p-adic groups\, a similar result was shown by Kazhdan and Ganapathy. We present a proof that this is compatible with Fargues–Scholze’s local Langlands correspondence. The proof relies on carrying out Fargues–Scholze’s construction over the one-point compactification of the natural numbers. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-12/
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
END:VCALENDAR