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math.FA2020★ 9 cited
Fixed point properties for semigroups of nonlinear mappings on unbounded sets
Anthony T. -M. Lau, Yong Zhang
A well-known result of W. Ray asserts that if is an unbounded convex subset of a Hilbert space, then there is a nonexpansive mapping : that has no fixed point. In t…
math.FA2020
Algebraic and analytic properties of semigroups related to fixed point properties of non-expansive mappings
Anthony T. M. Lau, Yong Zhang
The purpose of this paper is to give an updated survey on various algebraic and analytic properties of semigroups related to fixed point properties of semigroup actions on a non-em…