On the G-spaces having an -G-CW-approximation by a G-CW-complex of finite G-type
On the ideals of the semigroup of the 1-sphere
On the maximal -compactification of products of two -spaces.
On the -invariance property for -flows.
On topological ergodic measure spaces.
On transformation semigroups which are -semigroups.
Openly factorizable spaces and compact extensions of topological semigroups
We prove that the semigroup operation of a topological semigroup extends to a continuous semigroup operation on its Stone-Čech compactification provided is a pseudocompact openly factorizable space, which means that each map to a second countable space can be written as the composition of an open map onto a second countable space and a map . We present a spectral characterization of openly factorizable spaces and establish some properties of such spaces.
Order and domains of attraction of control sets in flag manifolds.
Ordering the local subsemigroups of a semigroup.