Covering space theory for directed topology.
-sets, irresolvable and resolvable spaces
Descriptive Sets and the Topology of Nonseparable Banach Spaces
This paper was extensively circulated in manuscript form beginning in the Summer of 1989. It is being published here for the first time in its original form except for minor corrections, updated references and some concluding comments.
Dicovering spaces.
Exponential objects in the construct
Fixed point results for multivalued contractions on ordered gauge spaces
The purpose of this article is to present fixed point results for multivalued E ≤-contractions on ordered complete gauge space. Our theorems generalize and extend some recent results given in M. Frigon [7], S. Reich [12], I.A. Rus and A. Petruşel [15] and I.A. Rus et al. [16].
Fixed point theorems on spaces endowed with vector-valued metrics.
Function Lipschitzian mappings on convex metric spaces
Isomorphisms of products
-Ponomarev’s System and Images of Locally Separable Metric Spaces
Les espaces topologiques, les espaces de proximité et les espaces uniformes d'un point de vue général
Les stratifiés topologiques et les polyèdres
On conjecture que certains espaces localement étoilés admettent toujours une jolie stratification naturelle, et deviennent ainsi ce qu’on appelle des ensembles. On cite quelques propriétés agréables des ensembles, et quelques exemples exotiques qui distinguent les ensembles, les espaces triangulables, et les espaces localement triangulables.
Linearly Singly Bi-k-spaces
Maß und Kategorie von Summenmengen.
Measures of compactness in approach spaces
We investigate whether in the setting of approach spaces there exist measures of relative compactness, (relative) sequential compactness and (relative) countable compactness in the same vein as Kuratowski's measure of compactness. The answer is yes. Not only can we prove that such measures exist, but we can give usable formulas for them and we can prove that they behave nicely with respect to each other in the same way as the classical notions.
Metrizability, generalized metric spaces and -functions
Modular circle quotients and PL limit sets.
More on semi-Urysohn spaces.
Multivalued Perov-type theorems in generalized metric spaces.
Natural continuity space structures on dual Heyting algebras