On Aumann's Theorem that the sphere does not admit a mean
On chains in $H$-closed topological pospaces
On closed embeddings of free topological algebras
On Cohomology theory for topological groups
On completeness in a non-Archimedean setting via firm reflections
On completeness of H-closed pospaces
On Connectivity Spaces
On continuity of correspondences of probability measures in the category of Tychonov spaces
On continuous choice of retractions onto nonconvex subsets
On continuous functions on two-dimensional disk which are regular in its interior points
On dimensionally restricted maps
On dimensions modulo a compact metric ANR and modulo a simplicial complex
On embeddings of proper and equicontinuous actions in zero-dimensional compactifications
On equilibrium states of heated self-gravitating gas clouds cooling by conduction in an external gravitational field
On extending actions of groups
On Extension Of Functors
On Faded Cosheaves of Sets
On finite T_0 topological spaces
On finite-dimensional maps
On Finite-Dimensional Maps II