On the continuity and monotonicity of restrictions of connected functions
On the Graphs which are the Edge of a Plane Tiling.
On the hyperspaces of hereditarily indecomposable continua
On the inverse image of Baire spaces.
On the Maćkowiak-Tymchatyn theorem
On the maximum of generalized Darboux functions
On the planarity of Peano generalized continua: An extension of a theorem of S. Claytor
We extend a theorem of S. Claytor in order to characterize the Peano generalized continua which are embeddable into the 2-sphere. We also give a characterization of the Peano generalized continua which admit closed embeddings in the Euclidean plane.
On the position of the set of monotone mappings in function spaces
On the preservation of Baire and weakly Baire category
We consider the question of preservation of Baire and weakly Baire category under images and preimages of certain kind of functions. It is known that Baire category is preserved under image of quasi-continuous feebly open surjections. In order to extend this result, we introduce a strictly larger class of quasi-continuous functions, i.e. the class of quasi-interior continuous functions. We show that Baire and weakly Baire categories are preserved under image of feebly open quasi-interior continuous...
On the pullback stability of a quotient map with respect to a closure operator.
On the relation between continuous and connected functions
On the set of points of discontinuity for functions with closed graphs
On the theory of - and -spaces in general topology
On the Uniform Convergence of Sequences of Open First Baire Class Functions.
On the weak-open images of metric spaces
In this paper, we give characterizations of certain weak-open images of metric spaces.
On the -continuous fixed point property.
On Topological Spaces With Dense Completely Metrizable Subspaces
On transfinite dimension
On trivially semi-metrizable and D-completely regular mappings
Trivially symmetrizable, trivially semi-metrizable and trivially D-completely regular mappings are defined. They are characterized as mappings parallel to symmetrizable, semi-metrizable and D-completely regular spaces correspondently. One shows that trivially D-completely regular mappings, i.e. submappings of fibrewise products of developable mappings coincide (up to homeomorphisms) with submappings of fibrewise products of semi-metrizable mappings.
On two theorems of Dyer