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math.AP2026
The obstacle problem for singular quasi-linear elliptic equations
Annamaria Barbagallo, Umberto Guarnotta
Existence of solutions to an obstacle -Laplacian problem exhibiting a singular, discontinuous reaction is proved. The reaction term may be discontinuous in a Lebesgue-negligible…
math.AP2020
On the regularity of weak solutions of the Boussinesq equations in Besov spaces Dedicated to Enrique Zuazua on the occasion of his sixtieth birthday
A. Barbagallo, S. Gala, M. A. Ragusa +1
The main issue addressed in this paper concerns an extension of a result by Z. Zhang who proved, in the context of the homogeneous Besov space $\dot{B}_{\infty ,\infty }^{-1}(\math…