A partitioned optimization framework for structure-aware optimization

This paper introduces a Partitioned Optimization Framework (POf) that reformulates complex optimization problems by identifying variable subsets that render subproblems tractable, and proposes a Derivative-Free Partitioned Optimization method (DFPOm) that efficiently solves these reformulated problems to find global solutions, demonstrating its effectiveness in both infinite-dimensional optimal control and finite-dimensional composite greybox applications.

Charles Audet, Pierre-Yves Bouchet, Loïc Bourdin2026-03-09🔢 math

Partial regularity for variational integrals with Morrey-Hölder zero-order terms, and the limit exponent in Massari's regularity theorem

This paper revisits the partial C1,αC^{1,\alpha} regularity theory for minimizers of variational integrals with Morrey-Hölder zero-order terms to establish the sharp dependence of the Hölder exponent on structural assumptions, thereby confirming optimal regularity up to the limit exponent in Massari's theorem for prescribed-mean-curvature hypersurfaces.

Thomas Schmidt, Jule Helena Schütt2026-03-09🔢 math

On fluctuations of Coulomb systems and universality of the Heine distribution

This paper investigates fluctuations in β=2\beta=2 Coulomb gases under specific external potentials, proving that particle counts near spectral outposts follow an asymptotic Heine distribution while those near disconnected droplet components exhibit discrete normal fluctuations, ultimately characterizing general linear statistics as a sum of Gaussian and oscillatory discrete Gaussian fields.

Yacin Ameur, Joakim Cronvall2026-03-09🔢 math