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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260521T141500
DTEND;TZID=Europe/Berlin:20260521T160000
DTSTAMP:20260527T080730
CREATED:20260430T080540Z
LAST-MODIFIED:20260430T083443Z
UID:13290-1779372900-1779379200@crc326gaus.de
SUMMARY:Symmetric Power Functoriality
DESCRIPTION:14:15 Talk 4 Background on Galois Deformation Theory: Mingkuan Zhang \n  \n  \n 
URL:https://crc326gaus.de/event/symmetric-power-functoriality-4/
LOCATION:Heidelberg
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260522T133000
DTEND;TZID=Europe/Berlin:20260522T143000
DTSTAMP:20260527T080730
CREATED:20260505T075121Z
LAST-MODIFIED:20260505T075121Z
UID:13346-1779456600-1779460200@crc326gaus.de
SUMMARY:Construction of logarithmic cohomology theories
DESCRIPTION:Doosung Park (Wuppertal) \nIn this talk\, I will explain a functor extending cohomology theories from schemes to log schemes. Using this functor\, we can obtain the log cyclotomic trace\, and we can represent K-theory in the logarithmic motivic homotopy category. I will also explain an application to the p-adic deformation problem for the K-theory of semistable schemes.
URL:https://crc326gaus.de/event/construction-of-logarithmic-cohomology-theories/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260522T140000
DTEND;TZID=Europe/Berlin:20260522T160000
DTSTAMP:20260527T080730
CREATED:20260511T122419Z
LAST-MODIFIED:20260511T122419Z
UID:13378-1779458400-1779465600@crc326gaus.de
SUMMARY:Toward the noncommutative minimal model program
DESCRIPTION:The aim of the talk is to introduce the noncommutative minimal model program (ncMMP) proposed by Halpern-Leistner and inspired by some works of Dubrovin and Kontsevich. For a given projective variety X\, the classical minimal model program asks if there is a variety Y that is birational to X but has simpler geometry\, such Y is called a minimal model of X. In the noncommutative context\, we consider the derived category D(X) of coherent sheaves on X\, and we ask if we can decompose it canonically. The biggest factor of the decomposition is then a minimal model for D(X). In order to find such a decomposition Halpern-Leistner proposes to use the quantum cohomology of X.\nWe will discuss some examples where Halpern-Leistner’s proposal is satisfied: Grassmannians\, quadrics\, and cubics in dimensions 3 and 4.
URL:https://crc326gaus.de/event/toward-the-noncommutative-minimal-model-program/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 007\, Im Neuenheimer Feld 205\, Heidelberg\, 69120\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260522T153000
DTEND;TZID=Europe/Berlin:20260522T170000
DTSTAMP:20260527T080730
CREATED:20260319T100054Z
LAST-MODIFIED:20260518T072739Z
UID:12873-1779463800-1779469200@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Lucien Hennecart (CNRS): The BPS sheaf for preprojective algebras and moduli of Higgs bundles \nIn the first part of the talk\, I will introduce the BPS sheaf associated with the preprojective algebra of a quiver. This is a perverse sheaf on the moduli space of representations\, endowed with a Lie algebra structure\, which encodes the Kac polynomials of the quiver. Its structure is described in terms of generators and relations in joint work with Davison and Schlegel Mejia. This description is formulated in terms of a generalized Kac–Moody algebra. \nIn the second part\, I will explain how this description makes it possible to determine the supports and local systems of the direct summands of the BPS sheaf. This description involves the geometry of hypertoric varieties in general\, and can in certain cases be simplified. Applying these results to the Hitchin fibration\, one recovers results due to de Cataldo\, Heinloth\, Migliorini\, and also Mauri\, concerning the effective decomposition theorem for the Hitchin morphism involving Ngo strings. This is all based on various discussions with Ben Davison. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl)
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-32/
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:20260526T160000
DTEND;TZID=Europe/Berlin:20260526T170000
DTSTAMP:20260527T080730
CREATED:20260416T144028Z
LAST-MODIFIED:20260520T110619Z
UID:13100-1779811200-1779814800@crc326gaus.de
SUMMARY:International Seminar on Automorphic Forms
DESCRIPTION:Zheng Liu (UCSB): Yoshida lifts and congruences\nA Yoshida lift is the theta lift of two modular forms to GSp(4). Its congruence with stable forms on GSp(4) can be used to produce a lower bound on the Selmer group of the Rankin-Selberg product of the two modular forms. We study this congruence by using Rallis inner product formula\, Bessel periods and Furusawa’s pullback formula\, together with p-adic interpolation. \nZoom (680 4828 0736\, The password is the first Fourier coefficient of the modular j-function (as digits)).
URL:https://crc326gaus.de/event/international-seminar-on-automorphic-forms-14/
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260527T160000
DTEND;TZID=Europe/Berlin:20260527T180000
DTSTAMP:20260527T080730
CREATED:20260512T073341Z
LAST-MODIFIED:20260513T120213Z
UID:13387-1779897600-1779904800@crc326gaus.de
SUMMARY:Oberseminar Algebra und Geometrie
DESCRIPTION:Konstantinos Kartas (Universität Münster): Taming perfectoid algebras \nAbstract: The almost purity theorem is a foundational result in perfectoid geometry which\, as the name suggests\, holds only in an “almost” sense. We aim to identify a class of rings for which the theorem holds in a genuine (non-almost) form. Joint work in progress with Franziska Jahnke. \n  \n 
URL:https://crc326gaus.de/event/oberseminar-algebra-und-geometrie-8/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260528T090000
DTEND;TZID=Europe/Berlin:20260528T110000
DTSTAMP:20260527T080730
CREATED:20260407T111943Z
LAST-MODIFIED:20260430T074957Z
UID:13006-1779958800-1779966000@crc326gaus.de
SUMMARY:Poincaré-Dualität in Charakteristik p
DESCRIPTION:Vortrag 6: Zykelklassenabbildung – Nicolas Otte
URL:https://crc326gaus.de/event/poincare-dualitat-in-charakteristik-p-6/
LOCATION:Heidelberg\, Mathematikon\, SR 8\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260528T100000
DTEND;TZID=Europe/Berlin:20260528T123000
DTSTAMP:20260527T080730
CREATED:20260414T090820Z
LAST-MODIFIED:20260421T125616Z
UID:13067-1779962400-1779971400@crc326gaus.de
SUMMARY:WKB Analysis: From Quadratic Differentials to Stokes matrices
DESCRIPTION:10:00 – 11:00 Talk 5: Konstantin Jakob (Goethe Universität): Stokes matrices and Voros periods \n11:30 – 12:30 Talk 6: Tianyi Feng (TU Darmstadt): Gentle introduction to the irregular Riemann-Hilbert correspondence \n  \n 
URL:https://crc326gaus.de/event/wkb-analysis-from-quadratic-differentials-to-stokes-matrices-copy/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260528T111500
DTEND;TZID=Europe/Berlin:20260528T124500
DTSTAMP:20260527T080730
CREATED:20260318T131929Z
LAST-MODIFIED:20260318T132447Z
UID:12864-1779966900-1779972300@crc326gaus.de
SUMMARY:The K-theory of Z/p^n
DESCRIPTION:Talk 6: Prismatic envelopes – Otmar Venjakob (Universität Heidelberg)
URL:https://crc326gaus.de/event/the-k-theory-of-z-pn-6/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260528T141500
DTEND;TZID=Europe/Berlin:20260528T151500
DTSTAMP:20260527T080730
CREATED:20260525T204255Z
LAST-MODIFIED:20260525T204255Z
UID:13441-1779977700-1779981300@crc326gaus.de
SUMMARY:Kolloquium Geometrie und Arithmetik
DESCRIPTION:Niklas Kipp (Paris-Saclay): A solid Syntomification \nAbstract: We will learn a strategy to obtain a well behaved six-functor formalism for Syntomic cohomology of p-adic formal schemes as defined by Bhatt-Morrow-Scholze. Here well behaved mainly refers to this six-functor formalism generalising Poincaré duality (which was proven by Longke Tang in the smooth and proper case) to smooth morphisms using a version of compactly supported syntomic cohomology. Concretely\, we will recall some aspects of the stacky approach to Prismatic/Syntomic cohomology (following Bhatt-Lurie and Drinfeld) as well as some aspects of the theory of (Solid) analytic stacks (following Clausen-Scholze). \n  \n 
URL:https://crc326gaus.de/event/kolloquium-geometrie-und-arithmetik/
LOCATION:Mainz\, Hilbertraum (05-432)
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Tamme":MAILTO:georg.tamme@uni-mainz.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260528T141500
DTEND;TZID=Europe/Berlin:20260528T160000
DTSTAMP:20260527T080730
CREATED:20260430T083641Z
LAST-MODIFIED:20260430T083641Z
UID:13299-1779977700-1779984000@crc326gaus.de
SUMMARY:Symmetric Power Functoriality
DESCRIPTION:14:15 Talk 5 Deforming (\phi\,\Gamma)-Modules: Benjamin Steklov \n  \n 
URL:https://crc326gaus.de/event/symmetric-power-functoriality-5/
LOCATION:Heidelberg
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260529T140000
DTEND;TZID=Europe/Berlin:20260529T160000
DTSTAMP:20260527T080730
CREATED:20260518T070612Z
LAST-MODIFIED:20260518T070612Z
UID:13421-1780063200-1780070400@crc326gaus.de
SUMMARY:Membranes and Maps
DESCRIPTION:In joint work with A. Brini\, it was conjectured that equivariant Gromov–Witten invariants of Calabi–Yau fivefolds are governed by so-called membrane indices. When the fivefold is a product of a Calabi–Yau threefold and the affine plane\, the latter invariants agree with\, or refine\, Gopakumar–Vafa invariants. I will present evidence for the conjecture. Moreover\, I will explain how the numerical correspondence informs us about a possible modular interpretation of M2-branes since ultimately their moduli space should give rise to membrane indices. Building on ideas of Nekrasov and Okounkov\, I will propose a geometric interpretation of M2-branes in some concrete situations. I will then translate this proposal into formulas for Hodge integrals\, which can be verified in certain limits. This is based on work in progress with A. Giacchetto and R. Pandharipande.
URL:https://crc326gaus.de/event/membranes-and-maps/
LOCATION:Heidelberg\, MATHEMATIKON\, SR 007\, Im Neuenheimer Feld 205\, Heidelberg\, 69120\, Germany
CATEGORIES:GAUS-Seminar
ORGANIZER;CN="Georg Bernhard Oberdieck":MAILTO:georgo@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260529T153000
DTEND;TZID=Europe/Berlin:20260529T170000
DTSTAMP:20260527T080730
CREATED:20260319T100223Z
LAST-MODIFIED:20260422T125411Z
UID:12875-1780068600-1780074000@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Manuel Hoff (Bielefeld): Sheared displays and p-divisible groups \nAbstract: Let p be a prime and let R be a p-nilpotent ring. The theory of displays\, as developed by Zink and Lau\, gives an equivalence between infinitesimal p-divisible groups and V-nilpotent displays over R. The aim of the talk is to explain that general p-divisible groups are equivalent to sheared displays\, the analogue of displays where the ring of Witt vectors is replaced by its sheared version. This is joint work with Eike Lau. \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl)
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-33/
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;VALUE=DATE:20260601
DTEND;VALUE=DATE:20260606
DTSTAMP:20260527T080730
CREATED:20260226T144700Z
LAST-MODIFIED:20260226T144700Z
UID:12743-1780272000-1780703999@crc326gaus.de
SUMMARY:Conference: Vertex algebras\, automorphic forms and combinatorics
DESCRIPTION:For more information see \nhttps://conferences.cirm-math.fr/3656.html
URL:https://crc326gaus.de/event/conference-vertex-algebras-automorphic-forms-and-combinatorics/
LOCATION:Marseille
CATEGORIES:GAUS-Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260601T101500
DTEND;TZID=Europe/Berlin:20260601T114500
DTSTAMP:20260527T080730
CREATED:20260421T091855Z
LAST-MODIFIED:20260421T091855Z
UID:13153-1780308900-1780314300@crc326gaus.de
SUMMARY:de Rham-Witt complex
DESCRIPTION:Timon Tausendpfund \n§6: Seminormal aspects \nThe de Rham–Witt complex is invariant under semi-normalization (and recovers the semi-normalization of a ring). Cover §§6.1-6.2 and §§6.5-6.6\, with a focus on Proposition 6.2.1\, Corollary 6.5.2\, and Theorem 6.5.3. As time permits\, introduce crystalline cohomology (as the cohomology of the structure sheaf on the crystalline site relative to the divided power ring (Zp\,(p))\, see for example the book by Berthelot or Tag 07GI in the Stacks project) and cover §6.4.
URL:https://crc326gaus.de/event/de-rham-witt-complex-5/
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:20260602T160000
DTEND;TZID=Europe/Berlin:20260602T170000
DTSTAMP:20260527T080730
CREATED:20260416T144116Z
LAST-MODIFIED:20260421T110931Z
UID:13099-1780416000-1780419600@crc326gaus.de
SUMMARY:International Seminar on Automorphic Forms
DESCRIPTION:tba\nChris Lutsko (University of Houston) \nZoom (680 4828 0736\, The password is the first Fourier coefficient of the modular j-function (as digits)).
URL:https://crc326gaus.de/event/international-seminar-on-automorphic-forms-15/
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260603T140000
DTEND;TZID=Europe/Berlin:20260603T170000
DTSTAMP:20260527T080730
CREATED:20260423T081650Z
LAST-MODIFIED:20260504T133400Z
UID:13218-1780495200-1780506000@crc326gaus.de
SUMMARY:Specialization of iterated Galois groups
DESCRIPTION:14:00 – 15:15 Talk 3: Ruth Wild (Goethe Universität Frankfurt): Extension of the base field – part I \n15:45 – 17:00 Talk 4: Magnus Carlson (Goethe Universität Frankfurt): Extension of the base field – part II \n  \n 
URL:https://crc326gaus.de/event/specialization-of-iterated-galois-groups-copy/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 308
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260608T101500
DTEND;TZID=Europe/Berlin:20260608T114500
DTSTAMP:20260527T080730
CREATED:20260421T092119Z
LAST-MODIFIED:20260421T092140Z
UID:13155-1780913700-1780919100@crc326gaus.de
SUMMARY:de Rham-Witt Complex
DESCRIPTION:Anton Engelmann \nDerived considerations \nThe Nygaard filtration and foundations for the last four talks. Define filtered derived categories (Construction 8.4.1) and the Beilinson t-structure (Remark 8.4.8). Use Proposition 8.4.10 as a definition for the functor Lηp\, and give a more explicit description relating it to the functor ηp of §2.1. Discuss Proposition 7.2.4\, Theorem 7.4.7 and Corollary 7.4.8. Finally\, define the Nygaard filtration as in Proposition 8.4.11. As time permits\, come back to some descriptions and properties in §8.1 and §8.2.
URL:https://crc326gaus.de/event/de-rham-witt-complex-6/
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:20260609T160000
DTEND;TZID=Europe/Berlin:20260609T170000
DTSTAMP:20260527T080730
CREATED:20260416T144210Z
LAST-MODIFIED:20260421T110720Z
UID:13098-1781020800-1781024400@crc326gaus.de
SUMMARY:International Seminar on Automorphic Forms
DESCRIPTION:tba\nHassan Saad (LSU) \nZoom (680 4828 0736\, The password is the first Fourier coefficient of the modular j-function (as digits)).
URL:https://crc326gaus.de/event/international-seminar-on-automorphic-forms-16/
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260610T140000
DTEND;TZID=Europe/Berlin:20260610T170000
DTSTAMP:20260527T080730
CREATED:20260423T082052Z
LAST-MODIFIED:20260504T133600Z
UID:13222-1781100000-1781110800@crc326gaus.de
SUMMARY:Specialization of iterated Galois groups
DESCRIPTION:14:00 – 15:15 Talk 5: Leonie Nienhaus (Goethe Universität Frankfurt): Proof of theorems 1.2 and 1.3 \n15:45 – 17:00 Talk 6: Benjamin Steklov (Goethe Universität Frankfurt): Proof of theorem 1.4 \n  \n 
URL:https://crc326gaus.de/event/specialization-of-iterated-galois-groups-2/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 308
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T090000
DTEND;TZID=Europe/Berlin:20260611T110000
DTSTAMP:20260527T080730
CREATED:20260407T112038Z
LAST-MODIFIED:20260428T102053Z
UID:13008-1781168400-1781175600@crc326gaus.de
SUMMARY:Poincaré-Dualität in Charakteristik p
DESCRIPTION:Vortrag 7: Dimension der Kohomologiegruppen – Alexander Schmidt
URL:https://crc326gaus.de/event/poincare-dualitat-in-charakteristik-p-7/
LOCATION:Heidelberg\, Mathematikon\, SR 8\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T100000
DTEND;TZID=Europe/Berlin:20260611T123000
DTSTAMP:20260527T080730
CREATED:20260414T091033Z
LAST-MODIFIED:20260421T125806Z
UID:13070-1781172000-1781181000@crc326gaus.de
SUMMARY:WKB Analysis: From Quadratic Differentials to Stokes matrices
DESCRIPTION:10:00 – 11:00 Talk 7: Paul Siemon (TU Darmstadt): SL(n\, C)-Opers \n11:30 – 12:30 Talk 8: Johannes Horn (Goethe Universität): SL(n\, C)-spectral networks and WKB analysis for opers \n  \n 
URL:https://crc326gaus.de/event/wkb-analysis-from-quadratic-differentials-to-stokes-matrices-3/
LOCATION:Frankfurt\, Robert-Mayer-Str. 6-8\, Raum 309
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T111500
DTEND;TZID=Europe/Berlin:20260611T124500
DTSTAMP:20260527T080730
CREATED:20260318T132125Z
LAST-MODIFIED:20260324T100239Z
UID:12866-1781176500-1781181900@crc326gaus.de
SUMMARY:The K-theory of Z/p^n
DESCRIPTION:Talk 7: Generators and relations descriptions for the Nygaard filtration –\nOtmar Venjakob (Universität Heidelberg)
URL:https://crc326gaus.de/event/the-k-theory-of-z-pn-7/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T141500
DTEND;TZID=Europe/Berlin:20260611T160000
DTSTAMP:20260527T080730
CREATED:20260430T083859Z
LAST-MODIFIED:20260430T083859Z
UID:13301-1781187300-1781193600@crc326gaus.de
SUMMARY:Symmetric Power Functoriality
DESCRIPTION:14:15 Talk 6 Deforming Global Galois Representations: Nils Tietke \n  \n 
URL:https://crc326gaus.de/event/symmetric-power-functoriality-6/
LOCATION:Heidelberg
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260612T133000
DTEND;TZID=Europe/Berlin:20260612T143000
DTSTAMP:20260527T080730
CREATED:20260507T081050Z
LAST-MODIFIED:20260507T081050Z
UID:13363-1781271000-1781274600@crc326gaus.de
SUMMARY:Eisenstein Congruences at Prime-Square Level
DESCRIPTION:Jaclyn Lang (Temple University Philadelphia) \nIn Mazur’s celebrated Eisenstein ideal paper\, he studies congruences between prime-level cusp forms and the unique weight-2 Eisenstein series of the same level. He shows that (if p is at least 5) such mod-p congruences exist if and only if the level N is congruent to 1 modulo p. In this talk\, we consider Eisenstein–cuspidal congruences in weight 2 and level N2\, still under the condition that N = 1 mod p. In this case\, recent work with Pollack and Wake shows that the relevant level-N2 Hecke algebra is a free module over an appropriate inertia-at-N pseudodeformation ring. This structure turns out to be surprisingly powerful. One can recover Mazur’s existence theorem that there exists a mod-p Eisenstein–cuspidal congruence in weight 2 and prime level N when N = 1 mod p. One can also recover the results of Merel and Lecouturier that characterize the rank of Mazur’s Hecke algebra in terms of the order of vanishing of a certain zeta element in cases when that rank is at most 3.  We will discuss some of the ideas that go into these results.  In addition to the joint work with Pollack and Wake\, the later results are joint with Palvannan and Müller.
URL:https://crc326gaus.de/event/eisenstein-congruences-at-prime-square-level/
LOCATION:Heidelberg\, Mathematikon\, SR A and Livestream
CATEGORIES:GAUS-Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260612T153000
DTEND;TZID=Europe/Berlin:20260612T170000
DTSTAMP:20260527T080730
CREATED:20260319T100329Z
LAST-MODIFIED:20260319T100329Z
UID:12877-1781278200-1781283600@crc326gaus.de
SUMMARY:Seminar on Arithmetic Geometry
DESCRIPTION:Federico Binda (Milano): tba \nZoom (635 7328 0984\, Kenncode: kleinste sechsstellige Primzahl)
URL:https://crc326gaus.de/event/seminar-on-arithmetic-geometry-34/
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:20260615T101500
DTEND;TZID=Europe/Berlin:20260615T114500
DTSTAMP:20260527T080730
CREATED:20260421T092343Z
LAST-MODIFIED:20260421T092343Z
UID:13157-1781518500-1781523900@crc326gaus.de
SUMMARY:de Rham-Witt Complex
DESCRIPTION:Klaus Mattis \n§9: The derived de Rham-Witt complex 1/2 \nAlternative description of the de Rham–Witt complex. More general criterion for when it can recover the de Rham complex. Define the derived de Rham–Witt and derived de Rham complexes (Construction 9.2.5\, Variant 9.2.6) and the conjugate filtration (Remark 9.2.7). Discuss Theorem 9.3.1 (the saturated de Rham–Witt complex in terms of the derived one). Prove Corollary 9.3.5 as an application. Prove Theorem 9.4.1 and Proposition 9.4.6.
URL:https://crc326gaus.de/event/de-rham-witt-complex-7/
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:20260616T160000
DTEND;TZID=Europe/Berlin:20260616T170000
DTSTAMP:20260527T080730
CREATED:20260416T144303Z
LAST-MODIFIED:20260421T110533Z
UID:13097-1781625600-1781629200@crc326gaus.de
SUMMARY:International Seminar on Automorphic Forms
DESCRIPTION:tba\nTrajan Hammonds (Aarhus) \nZoom (680 4828 0736\, The password is the first Fourier coefficient of the modular j-function (as digits)).
URL:https://crc326gaus.de/event/international-seminar-on-automorphic-forms-17/
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260618T090000
DTEND;TZID=Europe/Berlin:20260618T110000
DTSTAMP:20260527T080730
CREATED:20260407T112157Z
LAST-MODIFIED:20260428T101935Z
UID:13010-1781773200-1781780400@crc326gaus.de
SUMMARY:Poincaré-Dualität in Charakteristik p
DESCRIPTION:Vortrag 8: Gerstenauflösung I – Immanuel Klevesath
URL:https://crc326gaus.de/event/poincare-dualitat-in-charakteristik-p-8/
LOCATION:Heidelberg\, Mathematikon\, SR 8\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260618T111500
DTEND;TZID=Europe/Berlin:20260618T124500
DTSTAMP:20260527T080730
CREATED:20260324T095438Z
LAST-MODIFIED:20260428T094146Z
UID:12902-1781781300-1781786700@crc326gaus.de
SUMMARY:The K-Theory of Z/p^n
DESCRIPTION:Talk 8: Relative-to-absolute descent II – Chenyi Yang (Universität Heidelberg)
URL:https://crc326gaus.de/event/gaus-ag-the-k-theory-of-z-pn/
LOCATION:Heidelberg\, Mathematikon\, SR 8 and Zoom\, INF 205\, Heidelberg\, Germany
CATEGORIES:GAUS-AG
END:VEVENT
END:VCALENDAR