On sequences of contractive mappings and their fixed points.
On sequences of contractive-like mappings and fixed points
On sequential convergence in weakly compact subsets of Banach spaces
We construct an example of a Banach space E such that every weakly compact subset of E is bisequential and E contains a weakly compact subset which cannot be embedded in a Hilbert space equipped with the weak topology. This answers a question of Nyikos.
On sequentially Ramsey sets
On set tightness and -tightness
On sets always of the first category
On sets of confluent and related mappings in the space
On sets of points of semicontinuity in fine topologies generated by an ideal
On sets of small measure
On shape
On shape and fundamental deformation retracts
On shape and fundamental deformation retracts II
On shape groups and Cech homology groups of a compact space
On shape of hyperspaces
On shapes of topological spaces
On Shapley KKMS theorem
On similarity between topologies
Let T 1 and T 2 be topologies defined on the same set X and let us say that (X, T 1) and (X, T 2) are similar if the families of sets which have nonempty interior with respect to T 1 and T 2 coincide. The aim of the paper is to study how similar topologies are related with each other.
On simple recognizing of bounded sets
We characterize those uniform spaces and commutative topological groups the bounded subsets of which can be recognized by using only one uniformly continuous pseudometric.
On simultaneous Blumberg sets
On Simultaneous Fixed Points of Multi-Valued Maps.