Sébastien Darses
sebdarses.bsky.social
Sébastien Darses
@sebdarses.bsky.social
Math Assoc. Prof. (On leave, Aix-Marseille, France)
Teaching Project (non-profit): https://highcolle.com/
Reposted by Sébastien Darses
Fun (...) fact: the only linear operators on matrices that preserves the rank are X->AXB, where A and B are invertible (with X->X^T in the square case). This was apparently first proved (?) in 1959 by Marcus and Moyls.
July 2, 2025 at 11:04 AM
Reposted by Sébastien Darses
Kevin Tierney talks at the CRM workshop Combinatorial Optimization & Data Science about solving combinatorial optimization problems with deep reinforcement learning.

1/N
May 8, 2025 at 6:57 PM
Reposted by Sébastien Darses
Characterizing finely the decay of eigenvalues of kernel matrices: many people need it, but explicit references are hard to find. This blog post reviews amazing asymptotic results from Harold Widom (1963!) and proposes new non-asymptotic bounds.
francisbach.com/spectrum-ker...
March 24, 2025 at 2:26 PM
Reposted by Sébastien Darses
This review paper by @guillaume-garrigos.com on SGD-related algorithms is a fantastic resource, offering elegant, self-contained, and concise proofs in a single, accessible reference. arxiv.org/pdf/2301.11235
January 29, 2025 at 4:15 PM
Reposted by Sébastien Darses
🚀 INRAE recrute 58 Chargés de recherche (F/H) ! 🌱
📢 Les concours sont ouverts du 28 janvier au 4 mars pour les chercheurs en début de carrière, titulaires d’un doctorat.

📅 Dates clés :
▶️ Avril : Pré-sélection s/ dossier
▶️ 2–18 juin : Entretien de sélection

🔗 Postulez dès maintenant : jobs.inrae.fr
January 30, 2025 at 12:54 PM