Errata to: “Some fixed point theorems for mappings satisfying Frum-Ketkov conditions” [Comment. Math. Univ. Carolinae 17 (1976), no. 2, 399-411]
We give a corrected version of the main result from the paper cited in the title. We obtain necessary and sufficient conditions for the stability of the topological index of an open linear relation under compact perturbations
A gap in the proof of [4, Theorem 1] is removed.