Geometry, Arithmetic and Differential Equations of Periods (GADEPs)

M. Picard a donné à ces integrales le nom de périodes; je ne saurais l'en blâmer puisque cette dénomination lui a permis d'exprimer dans un langage plus concis les intéressants résultats auxquels il est parvenu. Mais je crois qu'il serait fâcheux qu'elle s'introduisit définitivement dans la science et qu'elle serait propre à engendrer de nombreuses confusions (H. Poincaré's remarks on the name period used for integrals, Acta Mathematica, 1887 page 323). 

2023-2

• 24 November 2023: Giada Grossi (Paris 13, France) *

• 17 November 2023: Radu Laza (Stony Brook, USA) *

• 10 November 2023: Cezar Lupu(BIMSA, China) *

• 03 November 2023: Matthias Paulsen (Uni. Honnover, Germany) *

• 27 October 2023: Anneloes Viergever (Universität Duisburg-Essen, Germany) *

• 20 October 2023: Lisa Marquand (Courant Institute of Mathematical sciences at NYU, USA) *

• 13 October 2023: Marc N. Levine (Universität Duisburg-Essen, Germany), *

• 06 October 2023: Jethro van Ekeren (IMPA, Brasil) *

• 29 September 2023: Felipe Espreafico (*, *) *

• 22 September 2023: Haohua Deng (Duke university, USA) *

• 15 September 2023: Yilong Zhang (Purdue university, USA) *

• 08 September 2023: Holiday (*, *) *

• 01 September 2023: Elizabeth Gasparim (Universidad Católica del Norte, Chile) Homological Mirror Symmetry for Adjoint Orbits

• 21-25 August 2023: GADEPs focused conference III: Noether-Lefschetz and Hodge loci
  GADEPs' Problem No. 1

• 18 August 2023: * (*, *) Quartic fourfolds II

• 11 August 2023: * (*, *) Quartic fourfolds I

2023-1

• 23 June 2023: Hossein Movasati, The most longstanding contradiction of my career

• 16 June 2023: Jin Cao, Quasi Jacobi forms

• 09 June 2023: Roberto Villaflor, Periods and twisted cubics

• 02 June 2023: Younes Nikdelan, Differential equations and modular forms

• 26 May 2023: Felipe Espreafico, Motivic and Arithmetic DT invariants for the Hilbert Scheme of Points in A^3

• 19 May 2023: Informal discussion

• 07-12 May 2023: GADEPs focused conference II: Periods of Calabi-Yau varieties and Gromov-Witten invariants For the web page hosted by BIMSA see GADEPs focused conference II

• 05 May 2023: Informal discussion: Self-similar integrals/periods

• 28 April 2023: Informal discussion: Borwein integrals

• 21 April 2023: Break

• 14 April 2023: Ilia Zharkov (KSU, USA) Tropical Hodge conjecture for Abelian varieties.

• 07 April 2023: Andrey Soldatenkov (IMPA, Brazil) Absolute Hodge classes and the Mumford-Tate conjecture for hyperkähler manifolds

• 31 March 2023: Informal discussion about a Veronese algebraic cycle for cubic 6-folds.

• 24 March 2023: François Greer (Michigan State University, USA) Quasi-modularity of Hodge cycles

• 17 March 2023: Emenuel Scheidegger (BICMR, China) On attractor points on the moduli space of Calabi-Yau threefolds

• 24 February 2023: Carnaval

• 17 February 2023: Richard Thomas(Imperial College, UK) Special Talk Nodes and the Hodge conjecture

• 10 February 2023: Jorge Duque (Uni. Chile, Chile), Second order invariant of the IVHS associated to the Hodge locus

• 03 February 2023: Jin Cao (Tsinghua univerisity, China), On Richard Thomas' article.

• 27 January 2023: Roberto Villaflor (Uni. Católica, Chile), Main conjecture for tangent spaces.

• 20 January 2023: Hossein Movasati (IMPA, Brazil) On a Hodge locus II

• 13 January 2023: Hossein Movasati (IMPA, Brazil) On a Hodge locus I

• 06 January 2023: Informal meeting

2022-2

• 18 November 2022: Felipe Espreafico (IMPA and Uni. Heidelberg) Atyiah-Bott formula and Refined Enumerative Geometry

• 30 September 2022: Robert Roussarie (Univ. Bourgogne, France) Conversation with Robert Roussarie This will be part of
  GADEPs focused conference: Abelian and iterated integrals and Hilbert 16th problem

• 23 September 2022: Haluk Sengun (Sheffield University, UK) Periods of Bianchi modular forms

• 16 September 2022: Jiangtao Li(Chines Academy of Sciences,China) Realizations of double shuffle relations

• 09 September 2022: Adrian Langer (MIMUV, Poland) Non-abelian Hodge theory in positive characteristic and its applications

• 02 September 2022: Paola Comparin(Universidad de la Frontera UFRO, Chile) CENCELED

• 26 August 2022: Jerson Caro (PUC, Chile) Some advances in a conjecture of Watkins

• 19 August 2022: Michela Artebani (Universidad de Concepción, Chile) Cox rings of K3 surfaces.

• 12 August 2022: Daniel Lopez (IMPA, Brazil) Monodromy problem and Tangential center-focus problem for product of generic lines in $\mathbb{P}^2$

• 05 August 2022: Amin Gholampour(Univ. of Maryland, US) 2-dimensional stable pairs on 4-folds

• 01, 08, 15, 22, 29 July 2022: Break between two semesters.

2022-1

• 24 June 2022: Gabriele Bogo (TU Darmstadt, Germany) *

• 17 June 2022: Martin Vogrin(JGU Mainz, Germany) *

• 10 June 2022: Ignacio Barros Reyes (Université Paris-Saclay, France) *

• 03 June 2022: Sebastian Eterovic (Berkeley, US) *

• 27 May 2022: Anita Maria Rojas Rodriguez (Universidade de Chile, Chile) Period matrices

• 20 May 2022: Luis Alberto Lomeli (PUCV, Chile) L-functions and representations of p-adic groups under the Kazhdan transfer between close local fields

• 13 May 2022: Jan-Willem van Ittersum (MPIM Bonn, Germany) Shifted symmetric functions, quasimodular forms and Hamiltonian operators

• 06 May 2022: Sebastián Olano (University of Michigan) Weighted Hodge ideals

• 29 April 2022: Robert Frederick Auffarth (Universidade de Chile, Chile) The Schottky Problem and secants of the Kummer variety

• 22 April 2022: * (*, *) * A very late carnival

• 15 April 2022: Sebastián Herrero (PUCV, Valparaíso, Chile) p-adic asymptotic distribution of CM points

• Slides08 April 2022: Yves Martin (Universidade de Chile, Chile) Non-vanishing of Fourier coefficients of Siegel cusp forms

• 01 April 2022: Pedro Montero Silva (UTFSM, Valparaíso, Chile) Intermediate Jacobians and Automorphisms of smooth hypersurfaces of the projective space

• Slides25 March 2022: Younes Nikdelan (UERJ, Brazil) About Ramanujan-Rankin-Cohen systems, sl_2(C)-Lie algebras and Hypergeometric differential equations

• 18 March 2022: Felipe Ramos (IMPA, Brazil) Gauss Manin Connection in Disguise: Mirror Quintic Threefolds with two rational curves

• 11 March 2022: Jorge Duque (Universidad de Antioquia, Colombia) On fake linear cycles inside Fermat varieties.

• 04 March 2022: Hossein Movasati (IMPA, Brazil) Holomorphic foliations with a center singularity

• December of 2021, January and February of 2022: Break between two semesters.

2021-2

• 26 November 2021: Paloma Bengoechea (ETHZ, Switzerland) Cycle integrals of modular functions and continued fractions

• 19 November 2021: Cristiana Bertolin (Torino, Italy). Grothendieck period conjecture and 1-motives

• 12 Novembro 2021: Jorge Vitório Pereira (IMPA, Brazil). On the formal principle for curves on projective spaces

• 05 November 2021: Ananyo Dan (University of Sheffield, UK).  Topological and geometric obstruction to deformation of divisors

• 29 October 2021: Mingmin Shen (University of Amsterdam, Netherlands). Some counter examples to the integral Hodge conjecture.

• 22 October 2021: Georg Oberdieck (Bonn University, Germany). On Chern numbers of Hilbert schemes of points on K3 surfaces and some applications

• 15 October 2021: Payman Eskandari (Toronto, Canada). Mixed motives with large unipotent radicals

• 08 October 2021: Henrik Bachmann(Nagoya, Japan). Finite multiple zeta values

• 01 October 2021: Johannes Walcher (Heidelberg, Germany). On the rationality of MUMs and 2-functions

• 24 September 2021: Carlos Simpson (Nice University, France). A twistor space for moduli of logarithmic connections of rank 2 on an open curve , Slides

• 17 September 2021: Pierre Vanhove (Institut de Physique Theorique, France). Feynman integrals and period integrals ,

• 10 September 2021: Nikolaos Diamantis (Nottingham, UK). L-series associated with harmonic Maass forms , Slides

• 03 September 2021: Maria Gioia Cifani (Università di Roma 3, Italy). Reconstructing curves from their Hodge classes

• 27 August 2021: Riccardo Pengo (ENS Lyon, France). Mahler measures, special values and exactness: a periodic journey , Slides

• 20 August 2021: Frank Loray (University of Rennes, France). Some transcendance problems in Painleve equations

• 13 August 2021: Ambrus Pal (Imperial College London, UK). Multiplicative periods of classical motives over function fields

• 02, 09, 16, 23, 30 July, 06 August 2021: Break between two semesters.

2021-1

• 25 June 2021: Pieter Moree (MPIM Bonn, Germany). Euler-Kronecker constants and cusp forms

• 18 June 2021: Salomón Rebollo Perdomo (Universidad del Bío-Bío, Chile). Abelian integrals for trivial global monodromy polynomials

• 11 June 2021: Bryce Kerr (MPIM, Bonn). Energies of modular roots

• 04 June 2021: . Between two holidays is holiday!!!!

• 28 May 2021: Bruno Klingler (Humboldt Universität, Germany). On the geometry of the Hodge locus

• 21 May 2021: Simon Pepin Lehalleur (Radboud University, Netherlands). Exponential periods and exponential Voevodsky motives Will start exceptionally at 11:30(Rio)

• 14 May 2021: Babak Haghighat (Tsinghua university, China). Hypergeometric functions in physics Cancelled

• 07 May 2021: Yohan Brunebarbe (CNRS, Bordeaux) . Increasing hyperbolicity of varieties supporting a variation of Hodge structures with level structures

• 30 April 2021: Clément Dupont (Université de Montpellier, France). Single-valued periods

• 23 April 2021: Holiday(São Jorge).

• 16 April 2021: Federico Zerbini (IPhT Paris-Saclay). The periods of string theory amplitudes

• 09 April 2021: Sergei Yakovenko (Weizmann Institute, Israel). How transcendental are Periods?

• 02 April 2021: Holiday (Sexta feira Santa).

• 26 March 2021: Andreas Braun (Durham, UK). String Vacua, Geometry, and Arithmetic

• 19 March 2021: Ma Luo (Oxford, UK) . Periods and completions of fundamental groups

• 12 March 2021: Giuseppe Ancona (Université de Strasbourg, France). The standard conjecture of Hodge type for abelian fourfolds

• 05 March 2021: Vacation between summer school and March-June semester.

• 26 February 2021: Gabriele Bogo (Darmstadt, Germany) Extended modularity and deformation of Riemann surfaces

• 19 February 2021 : Conversa com Alcides Lins Neto

• 12 February 2021(): Julien Roques (Lyon, France) Hypergeometric mirror maps

• 05 February 2021: Joseph Ayoub (University of Zurich, Switzerland) A new Weil cohomology in characteristic $p$ and a ring of $p$-adic periods

• 29 January 2021: Nils Matthes (Oxford, UK) The de Rham fundamental group of a once-punctured elliptic curve

• 22 January 2021: Interview with S. T. Yau See also the recent interview recent interview

• 15 January 2021: Tiago Fonseca (Oxford, UK) Periods and Poincaré series

• 08 January 2021: An informal meeting about the future of GADEPs

2020

• 27 November 2020: Claus Hertling (Mannheim, Germany) Periods and a Torelli conjecture for isolated hypersurface singularities

• 20 November 2020: Conversation with César Camacho , see also this interview

• 13 November 2020: Javier Fresán (École polytechnique, France): E-functions and (hyper)geometry

• 06 November 2020: Masha Vlasenko, (IMPAN, Poland): Frobenius constants of differential equations

• 30 October 2020: Ursula Whitcher (Mathematical Reviews AMS, US) High Picard rank K3 surfaces, Hasse-Witt matrices, and hypergeometric functions

• 23 October 2020: Murad Alim (Hamburg, Germany): Mirror symmetry and Jacobi forms

• 16 October 2020: Laure Flapan(MSU, USA): Period integrals and Hodge modules

• 09 October 2020: Interview with Michel Waldschmidt see this lecture for a beautiful exposition by Waldschmidt.

• 02 October 2020: Interview with Yulij Ilyashenko See this lecture for an excellent expository/historical talk by Ilyashenko .

• 25 September 2020: François Charles (Université Paris-Sud ): Geometry of numbers in infinite rank and diophantine applications

• 18 September 2020: Jeroen Sijsling (Universität Ulm, Germany): Arithmetic Fuchsian groups and canonical models

• 11 September 2020: Per Berglund (University of New Hampshire, US): TBA CANCELLED

• 04 September 2020: Frits Beukers (Utrecht University, Netherlands): Periods and Dwork’s congruences

• 28 August 2020: Gal Binyamini (Weizmann Institute, Israel): Point counting for foliations over number fields and Diophantine applications

• 21 August 2020: Alex Degtyarev (Bilkent University, Turkey): Counting 2-planes in cubic 4-folds in P^5

• 14 August 2020: Andrew Harder (Lehigh University, US): Calabi-Yau threefolds fibered by K3 surfaces and their internal Picard-Fuchs equation

• 07 August 2020: Adrian Clingher (UMSL, US): On K3 Surfaces of High Picard Rank , Slides

• 31 July 2020: Jorge Duque (IMPA): Hodge cycles and Gauss hypergeometric function

• 24 July 2020: Saiei Matsubara (Kobe, Japan): Signature of the monodromy invariant hermitian form of GKZ system

• 17 July 2020: Emre Sertoz (Hannover, Germany): Separating periods of quartic surfaces

• 10 July 2020: Ruben Lizarbe(Renne, UERJ): Affine and projective structures on varieties

• 03 July 2020: Lubomir Gavrilov(Toulouse, France): The bifurcation theory of quadratic isochronous centers revisited

• 26 June 2020: Javier Gargiulo(IMPA): Rational pull-backs of toric foliations This talk will start at 10:00!!!

• 19 June 2020: Daniel Lopez(IMPA): Homology supported in Lagrangian submanifolds in mirror quintic threefolds

• 12 June 2020: Roberto Vilaflor(IMPA): Small codimension components of the Hodge locus and periods of the Fermat variety

• 05 June 2020: Younes Nikdelan(UERJ): Rankin-Cohen bracket for Calabi-Yau modular forms

• 29 May 2020: Hossein Movasati(IMPA): Linear differential equations with finite monodromy