Special Session 60: Nonlinear Evolution Equations and Related Topics

Existence of distributional solutions to elliptic systems of $p$-Laplacian type for locally integrable forcing

Goro Akagi
Tohoku University
Japan
Co-Author(s):    Hiroki Miyakawa
Abstract:
This talk is concerned with existence and maximal regularity estimates for distributional solutions to degenerate/singular elliptic systems of $p$-Laplacian type with absorption and (prescribed) locally integrable forcing posed in unbounded Lipschitz domains. In particular, the forcing terms may not belong to the dual space of an energy space, e.g., $W^{1,p}_{\rm loc}$, which is necessary for the existence of weak (or energy) solutions of class $W^{1,p}_{\rm loc}$. The method of a proof relies on both local energy estimates and a relative truncation technique developed by Bul\`{i}\v{c}ek and Schwarzacher (Calc. Var. PDEs in 2016), where the bounded domain case is studied for (globally) integrable forcing.