Common fixed points of set-valued mappings.
Common fixed points of single-valued and multivalued maps.
Common fixed points of three self-mappings in cone metric spaces.
Common fixed points of two isotone maps on a complete lattice
Common fixed points of weakly contractive and strongly expansive mappings in topological spaces.
Common fixed points via weakly biased Greguš type mappings.
Common fuzzy hybrid fixed point theorems for a sequence of fuzzy mappings.
Common periodic points for a class of continuous commuting mappings on an interval.
Common random fixed points of compatible random operators.
Common stationary points for set-valued mappings.
Common stationary points of multivalued mappings on bounded metric spaces.
Commutative polynomial semigroups on a segment
Commutativity and non-commutativity of topological sequence entropy
In this paper we study the commutativity property for topological sequence entropy. We prove that if is a compact metric space and are continuous maps then for every increasing sequence if , and construct a counterexample for the general case. In the interim, we also show that the equality is true if but does not necessarily hold if is an arbitrary compact metric space.
Commuting contractive families
A family f₁,..., fₙ of operators on a complete metric space X is called contractive if there exists a positive λ < 1 such that for any x,y in X we have for some i. Austin conjectured that any commuting contractive family of operators has a common fixed point, and he proved this for the case of two operators. We show that Austin’s conjecture is true for three operators, provided that λ is sufficiently small.
Commuting mappings, fixed points and Ciric contraction in uniform spaces.
Compact 16-dimensional Projective Planes with Large Collineation Groups. III.
Compact abelian group extensions of dynamical systems II
Compact connected semilattices without the fixed point property.
Compact covering mappings and cofinal families of compact subsets of a Borel set
Among other results we prove that the topological statement “Any compact covering mapping between two Π⁰₃ spaces is inductively perfect” is equivalent to the set-theoretical statement ""; and that the statement “Any compact covering mapping between two coanalytic spaces is inductively perfect” is equivalent to “Analytic Determinacy”. We also prove that these statements are connected to some regularity properties of coanalytic cofinal sets in (X), the hyperspace of all compact subsets of a Borel...
Compact covering mappings between Borel ѕpaces