Large Deviations and the Peano Phenomenon in Stochastic Differential Equations with Homogeneous Drift

This paper investigates first- and second-order large deviations for stochastic differential equations with non-Lipschitz homogeneous drifts, demonstrating that the small-noise limit converges to the set of extreme deterministic solutions and that the second-order exponential behavior is governed by the ground state of an associated Schrödinger operator.

Paola Bermolen, Valeria Goicoechea, José R. León2026-03-04🔢 math

Carathéodory distance-preserving maps between bounded symmetric domains

This paper establishes the rigidity of distance-preserving maps between bounded symmetric domains by proving that such maps exist only when the co-domain's rank is at least that of the domain, and when ranks are equal and the domain is irreducible, the maps are necessarily holomorphic or antiholomorphic triple homomorphisms, all derived using large-scale geometric tools without assuming map smoothness.

Bas Lemmens, Cormac Walsh2026-03-04🔢 math

Inner models from extended logics and the Delta-operation

This paper investigates the sensitivity of inner models C(L)C(\mathcal{L}), constructed by replacing first-order logic with an abstract logic L\mathcal{L} in Gödel's definition of LL, to the Δ\Delta-extension of L\mathcal{L}, demonstrating that C(L)C(\mathcal{L}) can be consistently strictly smaller than C(Δ(L))C(\Delta(\mathcal{L})) and that this strict inequality follows from the existence of 00^{\sharp} in specific cases.

Jouko Väänänen, Ur Ya'ar2026-03-04🔢 math