Existence of nontrivial nonnegative periodic solutions for a class of doubly degenerate parabolic equation with nonlocal terms
The authors prove the existence of nontrivial nonnegative periodic solutions for a class of doubly degenerate parabolic equation with nonlocal terms. The proof is very technical and makes use of the Leray-Schauder degree.
scientific article; zbMATH DE number 5149576