Talks

Invited talks.

Past.

• Algebraic topology seminar of the LAGA: Vector bundles on smooth real affine surfaces and threefolds [pdf], Villetaneuse, 06/04/2026.

• Motifs bourguignons days II: Vector bundles on smooth real affine varieties, Dijon, 04/30/2026.

• Raconte-moi ! seminar: The Witt group of a ring, Paris, 12/11/2025.

• Mini-course (3h) at the real algebraic geometry days: Integral cycle class maps for real algebraic varieties and applications, Rennes, 11/05–07/2025.

• Algebra and topology seminar: A real analogue of the Hodge conjecture, Wuppertal, 05/07/2025.

• Géométrie et singularités seminar: A real analogue of the Hodge conjecture, Rennes, 02/27/2025.

• Géométrie des espaces singuliers seminar: A real analogue of the Hodge conjecture, Lille, 02/04/2025.

• Géométrie et topologie seminar: Splitting corank 0 vector bundles on a smooth real affine variety [pdf], Brest, 03/22/2024.

• Motivic geometry in Dijon workshop: The real cycle class map [pdf], Dijon, 09/15/2023.

• Annual meeting of the ANR project HQDIAG, Lyon, 09/06/2022: Motivic stable cohomotopy and unimodular rows [pdf], Lyon, 09/06/2023.

Contributed talks.

To come.

• Biennial meeting of the GAS thematic network: Géométrie algébrique et géométrie complexe. Le problème de scindage pour les fibrés vectoriels sur les variétés réelles affines lisses, CIRM, 11/02–06/2026. 

Past.

• Mini-cours Homotopy theory, derived categories, and quadratic forms: Splitting vector bundles on real algebraic varieties, Lens, 30/06/2026.

• Géométrie algébrique seminar: Splitting vector bundles on smooth real affine varieties, Lille, 04/09/2026.

• Conference: Recent Developments in Algebraic K-Theory: Motivic stable cohomotopy and unimodular rows. Warwick, 04/07–11/2025.

• Annual meeting of the ANR project HQDIAG: A real analogue of the Hodge conjecture, CIRM, 11/08/2024.

• Annual meeting of the thematic network RTop: Motivic stable cohomotopy and unimodular rows [pdf], Toulouse, 10/23/2024.

Other seminars.

• RéGA seminar: Splitting vector bundles on smooth real affine varieties, Paris, 04/15/2026.

• Mathjeunes seminar: Étale cohomology and mod 2 cohomology for real algebraic varieties, Paris, 04/04/2026. 

• PhD student seminar: The Witt group of a(n ordered) field, Marseille, 03/12/2024 (in French). 

• PhD student seminar: Of finite algebraic closures [pdf], Strasbourg, 01/11/2024 (in French).

• PhD days, Grenoble, 10/26/2023 : The Witt group of a ring and the real cycle class map [pdf].

• Compréhensible (=Ph.D. student) seminar: The Serre–Swan correspondence [pdf], Grenoble, 11/24/2022.

Working groups.

• Matroids and algebraic cycles organised by Olivier Benoist, fall 2025: Introduction to matroids.

• A¹-connected components funded by ANR project HQDIAG, spring 2023: Rationality and (étale) A¹-connectedness; Computations of A¹-fundamental groups.

• Real cycle map organised by Pierre Martinez and Santiago Toro Oquendo, academic year 2022–2023: The real cycle class map; Witt groups of derived and triangulated categories.

• Real geometry, motives and A¹ -homotopy funded by ANR project HQDIAG, spring 2022: Real spectrum and real étale site; Gluing the real and étale sites; Deligne cohomology in degree 2.