Schauder estimates for flat solutions to a class of fully nonlinear elliptic PDEs with Dini continuous data: a geometric tangential approach

This paper establishes local Schauder estimates for flat viscosity solutions to a class of non-convex fully nonlinear elliptic PDEs with Dini continuous data and linear drift terms using geometric tangential techniques, while also deriving an Evans-Krylov type estimate and characterizing the nodal sets of such solutions.

Junior da Silva Bessa, João Vitor da Silva, Laura Ospina2026-03-09🔢 math

Can deleterious mutations surf deterministic population waves? A functional law of large numbers for a spatial model of Muller's ratchet

This paper establishes a functional law of large numbers for a spatial model of Muller's ratchet, proving that the system converges to an infinite system of partial differential equations that rigorously determine population spreading speeds and demonstrate that deleterious mutations can indeed surf deterministic population waves.

João Luiz de Oliveira Madeira, Marcel Ortgiese, Sarah Penington2026-03-09🔢 math

Uniform sum-product phenomenon for algebraic groups and Bremner's conjecture

This paper combines additive combinatorics and Diophantine geometry to establish a uniform sum-product phenomenon for one-dimensional algebraic groups over C\mathbb{C}, thereby resolving Bremner's conjecture on arithmetic progressions in elliptic curve coordinates and improving upon existing results by Bays--Breuillard regarding Elekes--Szabó-type theorems.

Joseph Harrison, Akshat Mudgal, Harry Schmidt2026-03-09🔢 math