Federico Scavia

  • E-mail:
  • Office: D 316
  • Address: Institut Galilée
    Université Sorbonne Paris Nord
    99, avenue Jean-Baptiste Clément
    Villetaneuse, 93430

About me

I am a chargé de recherche of CNRS located at the Université Sorbonne Paris Nord (Université Paris 13). Here is my CV.

Publications and Preprints

  1. Brauer classes not split by genus one curves. With Zinovy Reichstein. Submitted August 2025.
  2. On direct summands of products of Jacobians over arbitrary fields. With Fumiaki Suzuki. Submitted July 2025.
  3. Specialization and rigidity. With Zinovy Reichstein. Submitted June 2025.
  4. Variétés réelles connexes non stablement rationnelles. With Jean-Louis Colliot-Thélène and Alena Pirutka. Submitted June 2025.
  5. Generically trivial torsors under constant groups. With Alexis Bouthier and Kęstutis Česnavičius. Submitted May 2025.
  6. The lifting problem for Galois representations. With Alexander Merkurjev. Submitted January 2025.
  7. Galois representations modulo p that do not lift modulo p2. With Alexander Merkurjev. Accepted by Journal of the American Mathematical Society.
  8. Non-formality of Galois cohomology modulo all primes. With Alexander Merkurjev. Accepted by Compositio Mathematica.
  9. On the Massey Vanishing Conjecture and Formal Hilbert 90. With Alexander Merkurjev. Proceedings of the London Mathematical Society. (3) 130 (2025), no. 3, Paper No. e70036.
  10. Varieties over ℚ̅ with infinite Chow groups modulo almost all primes. Journal of the London Mathematical Society (2) 110 (2024), no. 4, Paper No. e12994, 20 pp..
  11. Two coniveau filtrations and algebraic equivalence over finite fields. With Fumiaki Suzuki. Accepted by Algebraic Geometry.
  12. The Massey Vanishing Conjecture for fourfold Massey products modulo 2. With Alexander Merkurjev. Accepted by Annales Scientifiques de l'École Normale Supérieure.
  13. Sur l'injectivité de l'application cycle de Jannsen. With Jean-Louis Colliot-Thélène. Perspectives on Four Decades of Algebraic Geometry, In Memory of Alberto Collino, Volume 1, 151–183. Progr. Math., 351, 2025.
  14. Eilenberg-Moore spectral sequence and Hodge cohomology of classifying stacks. With Dmitry Kubrak. Accepted by Journal of Algebraic Geometry.
  15. Quotient singularities in the Grothendieck ring of varieties. With Louis Esser. Journal of Algebraic Geometry. 34 (2025), 183-204
  16. Degenerate fourfold Massey products in Galois cohomology. With Alexander Merkurjev. Journal of the European Mathematical Society, published online.
  17. Non-injectivity of the cycle class map in continuous l-adic cohomology. With Fumiaki Suzuki. Forum of Mathematics, Sigma. Volume 11, 2023, e6.
  18. Non-algebraic geometrically trivial cohomology classes over finite fields. With Fumiaki Suzuki. Advances in Mathematics. Volume 458, Part A, Paper No. 109964, 30
  19. Pathologies du groupe des classes de R-équivalence d'un groupe algébrique linéaire. Mathematische Annalen 387, 1333–1342 (2023)
  20. The behavior of essential dimension under specialization II. With Zinovy Reichstein. Algebra & Number Theory 17(2023), no.11, 1925-1958.
  21. The behavior of essential dimension under specialization. With Zinovy Reichstein. Épijournal de Géométrie Algébrique 6(2022), Art. 21, 28 pp.
  22. Sur la conjecture de Tate entière pour certains produits en dimension 3 sur un corps fini. Épijournal de Géométrie Algébrique. Volume 6 (2022).
  23. Steenrod operations on the de Rham cohomology of algebraic stacks. Journal Inst. Math. Jussieu. 22 (2023), no. 2, 493-540.
  24. Essential dimension of extensions of finite groups by tori. With Zinovy Reichstein. Algebraic Geometry 8 (6) (2021) 749-769.
  25. On the Mixed Tate property and the motivic class of the classifying stack of a finite group. Algebra & Number Theory Vol. 16 (2022), No. 10, 2265-2287.
  26. Motivic classes and the integral Hodge Question. C. R. Math. Acad. Sci. Paris. Volume 359, issue 3 (2021), p. 305-311.
  27. Sur la conjecture de Tate entière pour le produit d'une courbe et d'une surface CH0-triviale sur un corps fini. With Jean-Louis Colliot-Thélène. Rend. Circ. Mat. Palermo, II. Ser 72, 2895–2927 (2023)
  28. Torsion classes in the equivariant Chow groups of algebraic tori. Annales Scientifiques de l'École Normale Supérieure. Tome 56, fascicule 2 (2023), p. 571-587
  29. Embeddings of maximal tori in groups of type F4. With Andrew Fiori. Pacific Journal of Mathematics. Vol. 311 (2021), No. 1, 53-88.
  30. The Noether problem for spinor groups of small rank. With Zinovy Reichstein. Journal of Algebra 548 (2020), 134-152.
  31. On the Noether problem for torsion subgroups of tori. Pacific Journal of Mathematics 306 (2020), no. 2, 699-719.
  32. Motivic classes of classifying stacks of some semi-direct products. With Ivan Martino. Journal of Algebra 544 (2020), 62-74.
  33. Essential dimension and genericity for quiver representations. Documenta Mathematica 25 (2020), 329-364.
  34. Retract rationality and algebraic tori. Canadian Math. Bulletin 63 (2020), no. 1, 173-186.
  35. On the motivic class of an algebraic group. Algebra & Number Theory 14 (2020), no. 4, 855-866.
  36. Rational Picard group of moduli of pointed hyperelliptic curves. International Math. Research Notices 21 (2020), 8027-8056.
  37. Essential dimension of representations of algebras. Commentarii Mathematici Helvetici 95 (2020), 661-702.

Videos of talks