Conferences & Seminars

Conferences and seminars

• Algorithmic Number Theory Symposium (ANTS XVII)

  Groningen, 6–10 July 2026

  Co-organiser, with Hess, Kılıçer, Lange, Müller, Özman, Streng, Top and Trimoska, of a conference devoted to computational number theory and its applications.

• Arithmetic cycles, modular forms, and L-functions

  CRM Montréal, 18–22 August 2025

  Co-organiser of a conference on recent advances in the theory of arithmetic cycles, modular forms, and L-functions. The conference was a celebration of the mathematics of Henri Darmon, on the occasion of his 60th birthday.

• Arithmetic, geometry, space, and time

  ICMS Edinburgh, 25–29 November 2024

  Co-organiser for a conference to celebrate the occasion of Minhyong Kim's 61st birthday, organised together with Netan Dogra, Dohyeong Kim, and Jaesung Kwon. The event was held at the ICMS in Edinburgh.

• Séminaire Mazur

  Leiden, 22–26 July 2024

  Paolo Bordignon and I organised a learning seminar on modular curves and the Eisenstein ideal, with a special focus on the parts of the argument involving the structure of group schemes.

• Arithmetic theta series and p-adic modular forms

  Cetraro, 3–7 June 2024

  Co-organiser of a conference in Cetraro (Calabria) dedicated to recent advances in the Kudla programme, with a focus on emerging relations between archimedean and non-archimedean arithmetic techniques.

• Arithmetic Statistics

  CIRM Luminy (Marseille), 15–19 May 2023

  Organising committee for a conference on arithmetic statistics. The main organiser was Samuele Anni, and this conference was part of a special semester at CIRM in the Spring of 2023, when Peter Stevenhagen was the Jean-Morlet Chair.

• Problèmes de densité en Arithmétique

  CIRM Luminy (Marseille), 3–7 April 2023

  I co-organised a workshop on density problems in arithmetic, CIRM special semester spring 2023.

• Working Seminar

  Leiden, 2022–2023

  Seminar with talks by group members and visitors, supported by the VIDI grant “Arithmetic intersections of geodesics”.

• Singular moduli for real quadratic fields

  IAS / Princeton, Fall 2019

  Akshay Venkatesh, Chris Skinner, and I organised a learning seminar at IAS / Princeton University on the theory of rigid cocycles and singular moduli for real quadratic fields.

• The Gross–Zagier formula

  Oxford, Michaelmas 2018

  Netan Dogra and I organised a graduate learning seminar on the work of Gross and Zagier on heights of Heegner points and derivatives of L-series of modular Jacobians.

• Jacquet–Langlands and cyclic base change

  Oxford, Michaelmas 2014

  Minhyong Kim, Andrew Wiles, and I organised a seminar on base change for automorphic forms and the work of Jacquet and Langlands.

• Perverse sheaves and the decomposition theorem

  Oxford, Michaelmas 2014

  Balázs Szendrői and I organised a seminar on perverse sheaves and the decomposition theorem, following the paper of De Cataldo and Migliorini.

• Deformation week

  Oxford, 16–19 April 2013

  I co-organised (with Emily Cliff and Kristian Strømmen) a workshop for graduate students on various aspects of deformation theory, funded by the Mathematical Institute in Oxford. The schedule and list of participants can be found on the webpage.

• Rational points on curves: a p-adic and computational perspective

  Oxford, 24–28 September 2012

  I co-organised (with Henri Darmon, Minhyong Kim and Alan Lauder) a conference on rational points on curves, funded by the ERC. The conference website contains notes from all the talks.

Invited talks

Invited talks, lectures and seminars, in reverse chronological order.

• Dynamics, Equations and Applications (DEA)KrakówPOL28 June – 2 July 2027
• Regroupement thématique Théorie des nombres (RT2N)LuminyFRA7–11 September 2026
• Algebra SeminarGroningenNLD1 September 2026
• Curves, Abelian VArieties and RElated Topics (CAVARET)BarcelonaESP13–17 July 2026
• ChabonntyBonnDEU29 June – 3 July 2026
• Mini-course: p-adic aspects of the Kudla programCIRM LuminyFRA8–19 June 2026
• Algebraische ZahlentheorieOberwolfachDEU1–5 June 2026
• The Eisenstein ideal and Galois representations Simons Foundation, New YorkUSA18–22 May 2026
• Familles p-adiques de fausses formes modulairesCIRM LuminyFRA23–30 April 2026
• Arithmetic Study GroupDurhamGBR20 January 2026
• Pure ColloquiumDurhamGBR19 January 2026
• Stark-SIC SeminarVirtual15 December 2025
• Rational points symposiumLeidenNLD12 December 2025
• Automorphic forms seminarKrakówPOL7 November 2025
• International Workshop on Automorphic FormsSwissMAP, Les DiableretsCHE1–5 September 2025
• Nesin Matematik Köyü course lecturerŞirinceTUR4–10 August 2025
• Modular forms in BielefeldBielefeldDEU23–26 June 2025
• Rencontres Arithmétiques de CaenUniversité de CaenFRA18–20 June 2025
• Seminar on Arithmetic and Algebraic GeometryMünchenDEU22 January 2025
• Arithmetic and p-adic geometry in ChileSantiagoCHL2–14 December 2024
• Swiss Number Theory DaysBrigCHE11–12 October 2024
• Recent progress on Hilbert's 12th problemICMS EdinburghGBR24–29 June 2024
• Simons Symposium on Periods and L-values of MotivesSchloss ElmauDEU9–15 June 2024
• Arithmetic theta series and p-adic modular formsCetraroITA3–7 June 2024
• Periods in Physics, Number Theory and Algebraic GeometryBonnDEU22-26 March 2024
• Arithmetic and Algebraic Geometry SeminarStrasbourgFRA21 March 2024
• Algebraic and Arithmetic Geometry SeminarBielefeldDEU13 February 2024
• Rational points symposiumLeidenNLD23 January 2024
• Eisenstein cocycles and their applicationsUCLGBR18–20 December 2023
• ALGANT Student SeminarMilanITA28 November 2023
• Arithmetic Geometry SeminarMilanITA27 November 2023
• Rational points on modular curvesICTS BangaloreIND11–22 September 2023
• Y-RANT 2023CambridgeGBR6–8 September 2023
• Department Colloquium Tor Vergata, RomeITA20 July 2023
• Workshop on Chabauty–KimMontserratESP28–30 June 2023
• Number Theory SeminarGothenburgSWE7 June 2023
• Edixhoven memorial conferenceLeidenNLD30 May – 2 June 2023
• Mini-course CM theoryLuminyFRA8–12 May 2023
• Mathematics ColloquiumDarmstadtDEU3 May 2023
• Colloque des sciences mathématiquesMontréalCAN11 November 2022
• Modular forms in number theory and beyondBielefeldDEU22–26 August 2022
• Mordell 2022 – A centenary of elliptic curvesCambridgeGBR15-19 August 2022
• Mini course “Torsion points” Baskerville Hall, WalesGBR8–12 August 2022
• Mini course “Rigid cocycles and RM singular moduli”PCMI UtahUSA1–5 August 2022
• 30^e Rencontres ArithmétiquesCaenFRA23–27 May 2022
• Workshop Stark's conjecturesBristolGBR21–25 March 2022
• Iwasawa theory and p-adic L-functions (II)ZhuhaiCHN9 March 2022
• Iwasawa theory and p-adic L-functions (I)ZhuhaiCHN2 March 2022
• Fields Institute SeminarTorontoCAN28 February 2022
• Graduation seminar Enis KayaGroningenNLD30 September 2021
• CMS 75th Anniversary MeetingOttawaCAN7–11 June 2021
• Number Theory Seminar (III)Seoul National UniversityKOR26 April 2021
• Séminaire Arithmétique et Géométrie AlgébriqueOrsayFRA20 April 2021
• Number Theory Seminar (II)Seoul National UniversityKOR19 April 2021
• Number Theory Seminar (I)Seoul National UniversityKOR12 April 2021
• Algebra SeminarBrown UniversityUSA8 March 2021
• Algebra, Geometry & Number Theory SeminarLeidenNLD1 March 2021
• Number Theory SeminarWarwick UniversityGBR8 February 2021
• Arithmetic intersection theory on Shimura varietiesAIM PasadenaUSA4–8 January 2021
• Luxembourg Number Theory DayLuxembourgLUX14 December 2020
• DIAMANT SymposiumLeidenNLD26–27 November 2020
• Representation Theory and Automorphic FormsViennaAUT24 November 2020
• Algebra and NT SeminarUniversity College DublinIRL27 October 2020
• Connecticut Summer School in Number Theory (CTNT)University of ConnecticutUSA14 June 2020
• Arithmetic Geometry, Project leader (with N. Dogra)ICERM ProvidenceUSA1–5 June 2020
• Number Theory SeminarMITUSA5 May 2020
• Number Theory SeminarRutgers UniversityUSA28 April 2020
• Algebra/NT SeminarRochesterUSA22 April 2020
• International Seminar on Automorphic FormsDarmstadt/ETH Zürich/CologneDEU22 April 2020
• Basic Notions seminarIAS PrincetonUSA2 April 2020
• Arizona Winter School, Project assistantUniversity of ArizonaUSA7–11 March 2020
• Johns Hopkins Number Theory SeminarBaltimoreUSA20 November 2019
• NYU–CUNY–Columbia Number Theory SeminarNew YorkUSA14 November 2019
• Automorphic p-adic L-functions and regulatorsLilleFRA14–18 October 2019
• IAS Members' SeminarPrincetonUSA2 October 2019
• Mini-course Iwasawa 2019 ConferenceBordeauxFRA19–22 June 2019
• p-Adic modular forms and p-adic L-functionsLake ComoITA20–24 May 2019
• SGA SeminarHeidelberg/DarmstadtDEU26 April 2019
• Number Theory SeminarMPIM BonnDEU24 April 2019
• Number Theory SeminarIAS/Princeton UniversityUSA4 April 2019
• Number Theory SeminarUniversity of ExeterGBR28 March 2019
• London Number Theory SeminarUCLGBR13 March 2019
• Intercity Number Theory SeminarUniversity of GroningenNLD1 March 2019
• Heilbronn SeminarUniversity of BristolGBR20 February 2019
• Séminaire de Théorie des Nombres à Paris 6/7IMJ–PRGFRA4 February 2019
• Joint Meeting AMS, Number Theory, Arith. Geom., and Comp.BaltimoreUSA19 January 2019
• Joint Meeting AMS, New directions in Complex MultiplicationBaltimoreUSA16 January 2019
• Number Theory SeminarBoston UniversityUSA3 December 2018
• North Meets South ColloquiumUniversity of OxfordGBR30 November 2018
• Number Theory SeminarUniversity of CambridgeGBR27 November 2018
• Oberseminar ZahlentheorieUniversity of CologneDEU6 November 2018
• London Number Theory SeminarImperial CollegeGBR7 August 2018
• Chabauty–Kim WorkshopFondation Des TreillesFRA23–28 July 2018
• Bellairs Workshop on Unitary Shimura VarietiesBarbadosBRB3 May 2018
• Number Theory and Algebraic Geometry SeminarBoston CollegeUSA19 April 2018
• ColloquiumUniversity of ManitobaCAN6 April 2018
• Number Theory SeminarUniversité LavalCAN23 March 2018
• Number Theory SeminarUCLAUSA5 March 2018
• Number Theory SeminarCaltechUSA2 March 2018
• Montréal–Toronto Workshop on Unitary Shimura VarietiesTorontoCAN13-14 January 2018
• BAANTAG ConferenceUC BerkeleyUSA2 December 2017
• Number Theory SeminarUniversity of ChicagoUSA21 November 2017
• Number Theory SeminarNorthwestern UniversityUSA20 November 2017
• Québec–Maine Number Theory ConferenceMaine UniversityUSA14 October 2017
• Number Theory SeminarUPC BarcelonaESPJune 2017
• Number Theory SeminarHarvard UniversityUSA12 April 2017
• Québec–Vermont Number Theory SeminarMcGill UniversityCAN9 February 2017
• Québec–Maine Number Theory ConferenceUniversité LavalCAN8-9 October 2016
• Number Theory SeminarUniversity of NijmegenNLD11 June 2016
• Workshop on Serre's Uniform Boundedness ConjectureTorontoCAN12-13 May 2016
• PIMS Abelian Varieties SeminarPIMS VancouverCAN4 March 2016
• Number Theory SeminarSimon Fraser UniversityCAN3 March 2016
• ColloquiumCornell UniversityUSA12 February 2016
• Number Theory SeminarCornell UniversityUSA12 February 2016
• CMS Winter MeetingMontréalCAN4 December 2015
• Number Theory SeminarUniversité LavalCAN13 November 2015
• Québec–Vermont Number Theory SeminarMcGill UniversityCAN22 October 2015
• Québec–Maine Number Theory ConferenceUniversity of MaineUSA3-4 October 2015
• Number Theory SeminarWarwick UniversityGBR9 March 2015
• Intercity Number Theory SeminarLeuven UniversityBEL30 May 2014
• Algebra and Geometry SeminarNewcastle UniversityGBR22 November 2012