Perturbation theorems for positive eigenvalues of countably condensing maps
Using a homotopy extension theorem, we give a perturbation theorem for countably condensing maps in a more general setting. Moreover, we prove perturbation theorems for positive eigenvalues of countably condensing maps in locally convex topological vector spaces which include the case of condensing maps due to Jerofsky [1]. (C) 2004 Elsevier Ltd. All rights reserved.
perturbations eigenvalues countably condensing maps homotopy extension theorem