APPROXIMATIVE PROPERTIES OF SETS IN NORMED LINEAR SPACES

Multi-valued contraction mappings

Sam B. Nadler · Pacific Journal of Mathematics · 1969 · 2.3K citations · Full text

Natural Sciences, Mathematics, Dynamical Systems +6

Fixed-point and Minimax Theorems in Locally Convex Topological Linear Spaces

Ky Fan · Proceedings of the National Academy of Sciences · 1952 · 978 citations · Full text

Life Sciences, Neuroscience, Psychology +17

Extension of compact operators

Joram Lindenstrauss · Memoirs of the American Mathematical Society · 1964 · 341 citations

Natural Sciences, Architectural Representation, Representation Theory +5

Fixed Point Theorems for Multi-Valued Transformations

Samuel Eilenberg, Deane Montgomery · American Journal of Mathematics · 1946 · 293 citations

Natural Sciences, Architectural Representation, Dynamical Systems +10

A fixed point theorem for set valued mappings

J.T. Markin · Bulletin of the American Mathematical Society · 1968 · 146 citations · Full text

Natural Sciences, Mathematics, Set Theory +9