Generalizations of Ky Fan's matching theorems and their applications
The author proves new theorems on closed and open coverings, and obtains new generalizations of the KKM theorem, Brouwer's fixed-point theorem, and Ky Fan's fixed point theorem. This extends previous work of W. Takahashi, M. Lassonde, S. Simons, and A. Gramas.
scientific article; zbMATH DE number 4115354