2 papers
math.AP2026
Sharp nonuniqueness for the forced 2D Navier-Stokes and dissipative SQG equations
Francisco Mengual, Marcos Solera
We prove a sharp nonuniqueness result for the forced generalized SQG equation. First, this yields nonunique - energy solutions below the Miura-Ju class. In particular, t…
math.AP2025
Unstable vortices, sharp non-uniqueness with forcing, and global smooth solutions for the SQG equation
Ãngel Castro, Daniel Faraco, Francisco Mengual +1
We prove non-uniqueness of weak solutions to the forced -SQG equation with Sobolev regularity in the supercritical regime , covering the 2D Euler…