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X-WR-CALDESC:Events for CRC 326 - GAUS
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241210T140000
DTEND;TZID=Europe/Berlin:20241210T153000
DTSTAMP:20260423T065650
CREATED:20241108T103213Z
LAST-MODIFIED:20241108T103213Z
UID:9766-1733839200-1733844600@crc326gaus.de
SUMMARY:Vector bundles on curves
DESCRIPTION:Christopher Lang: Vector bundles in families \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/vector-bundles-on-curves-7/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241206T153000
DTEND;TZID=Europe/Berlin:20241206T170000
DTSTAMP:20260423T065650
CREATED:20241016T112752Z
LAST-MODIFIED:20241118T122001Z
UID:9357-1733499000-1733504400@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Christopher Lang (TU Darmstadt): Ekedahl-Oort Stratification of Deligne-Lusztig Varieties \nWhen developing a stratificaion of Rapoport-Zink spaces\, Vollaard and\nWedhorn constructed a decomposition of a certain Deligne-Lusztig variety\nfor a unitary group using smaller Deligne-Lusztig varieties. We will show\nthat this decomposition can be obtained by pullback of the Ekedahl-Oort\nstratification of G-Zips. With this method one gets an Ekedahl-Oort\nstratification of flag varieties for reductive groups\, which refines the\nusual stratification by Deligne-Lusztig varieties. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-16/
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:20241206T133000
DTEND;TZID=Europe/Berlin:20241206T143000
DTSTAMP:20260423T065650
CREATED:20241113T103034Z
LAST-MODIFIED:20241126T102503Z
UID:9832-1733491800-1733495400@crc326gaus.de
SUMMARY:Chow-Heegner Points and Artin Formalism for triple product p-adic L-functions
DESCRIPTION:Kazim Büyükboduk (University College Dublin) \nI will discuss the factorization of a certain triple product p-adic L-function whose interpolation range is empty. The said factorization reflects the Artin formalism for the underlying family of motives (that decompose as the sum of 2 motives of respective degrees 2 and 6). I will explain how this factorization problem can be recast as the comparison of two families of arithmetic GGP conjectures (and can be proved in some cases using this reduction).
URL:https://crc326gaus.de/event/chow-heegner-points-and-artin-formalism-for-triple-product-p-adic-l-functions/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241206T110000
DTEND;TZID=Europe/Berlin:20241206T120000
DTSTAMP:20260423T065650
CREATED:20241202T083638Z
LAST-MODIFIED:20241202T084811Z
UID:10043-1733482800-1733486400@crc326gaus.de
SUMMARY:Tropical refined curve counting and mirror symmetry
DESCRIPTION:Dr. Qaasim Shafi\, postdoctoral research associate at Heidelberg University
URL:https://crc326gaus.de/event/tropical-refined-curve-counting-and-mirror-symmetry-2/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 10\, INF 205\, Heidelberg\, 69124\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241206T090000
DTEND;TZID=Europe/Berlin:20241206T110000
DTSTAMP:20260423T065650
CREATED:20241211T123516Z
LAST-MODIFIED:20241211T123516Z
UID:10147-1733475600-1733482800@crc326gaus.de
SUMMARY:Congruence Modules and the Wiles–Lenstra–Diamond Numerical Criterion in Higher Codimension
DESCRIPTION:Sriram Chinthalagiri Venkata (Universität Heidelberg): Tate resolutions
URL:https://crc326gaus.de/event/congruence-modules-and-the-wiles-lenstra-diamond-numerical-criterion-in-higher-codimension-4/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241205T141500
DTEND;TZID=Europe/Berlin:20241205T151500
DTSTAMP:20260423T065650
CREATED:20241002T101031Z
LAST-MODIFIED:20241126T120757Z
UID:9275-1733408100-1733411700@crc326gaus.de
SUMMARY:On the transcendental part of K3 surfaces associated with 3D Fano polytopes
DESCRIPTION:
URL:https://crc326gaus.de/event/tba-113/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241205T111500
DTEND;TZID=Europe/Berlin:20241205T124500
DTSTAMP:20260423T065650
CREATED:20241105T134729Z
LAST-MODIFIED:20241105T134729Z
UID:9687-1733397300-1733402700@crc326gaus.de
SUMMARY:The direct summand theorem
DESCRIPTION:Talk 8: Marvin Schneider (Universität Heidelberg): Perfectoid spaces II: Tate acyclicity
URL:https://crc326gaus.de/event/the-direct-summand-theorem-5/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20241204
DTEND;VALUE=DATE:20241207
DTSTAMP:20260423T065650
CREATED:20240620T121454Z
LAST-MODIFIED:20240813T082546Z
UID:8851-1733270400-1733529599@crc326gaus.de
SUMMARY:Workshop: Combinatorial Christmas Geometry without Geometry
DESCRIPTION:
URL:https://crc326gaus.de/event/workshop-combinatorial-christmas-geometry-without-geometry/
LOCATION:Frankfurt am Main
CATEGORIES:GAUS-Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241203T160000
DTEND;TZID=Europe/Berlin:20241203T170000
DTSTAMP:20260423T065650
CREATED:20241016T114757Z
LAST-MODIFIED:20241127T145427Z
UID:9394-1733241600-1733245200@crc326gaus.de
SUMMARY:Topographs and some infinite series
DESCRIPTION:International Seminar on Automorphic Forms \nCormac O’Sullivan (CUNY)): Topographs and some infinite series\nThe Fibonacci numbers are a familiar recursive sequence. Topographs are a kind of two dimensional version conjured up by J.H. Conway in his study of integral binary quadratic forms. These forms are ax^2 + bxy + cy^2 with integer coefficients\, and have a long history in number theory. We’ll review Conway’s classification of topographs into 4 types and look at some new discoveries. Applications are to new class number formulas and a simplification of a proof of Gauss related to sums of three squares. We’ll also see how several infinite series over all the numbers in a topograph may be evaluated explicitly. This generalizes and extends results of Hurwitz and more recent authors and requires a certain Poincare series.  \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-121/
LOCATION:Zoom
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Claire Burrin":MAILTO:claire.burrin@math.uzh.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241203T140000
DTEND;TZID=Europe/Berlin:20241203T153000
DTSTAMP:20260423T065650
CREATED:20241108T103025Z
LAST-MODIFIED:20241108T103025Z
UID:9767-1733234400-1733239800@crc326gaus.de
SUMMARY:Vector bundles on curves
DESCRIPTION:Rizacan Ciloglu : Existence of semi-stable vector bundles and examples \nZoom (612 2072 7363\, Password: largest six digit prime number)
URL:https://crc326gaus.de/event/vector-bundles-on-curves-6/
LOCATION:Darmstadt\, Room 401 and Zoom\, Schlossgartenstraße 7\, Darmstadt\, 64289\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241129T153000
DTEND;TZID=Europe/Berlin:20241129T170000
DTSTAMP:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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:20260423T065650
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
END:VCALENDAR