Coincidences for Admissible and Φ★Maps and Minimax Inequalities

AbstractA coincidence theory for Φ★and admissible maps is presented in this paper. One can also deduce from this theory new minimax inequalities of von Neumann–Sion type

A Furi-Pera theorem in Hausdorff topological spaces for acyclic maps

We present new Furi-Pera theorems for acyclic maps between topological spaces