Grinc, M.; Snoha, L.(Universitat Politècnica de València, 2000-10-01)
[EN] We prove that a continuous triangular map G of the n-dimensional cube In has only fixed points and no other periodic points if and only if G has a common fixed point with every continuous triangular map F that is ...
Constantini, Camillo; Kubís, Wieslaw(Universitat Politècnica de València, 2003-10-01)
[EN] We prove that the hyperspace of closed bounded sets with the Hausdor_ topology, over an almost convex metric space, is an absolute retract. Dense subspaces of normed linear spaces are examples of, not necessarily ...