Regular maps and products of p-quotient maps
Regular spaces and relations
Regular-uniform convergence and the open-open topology.
Relaciones entre las compleciones de espacios seudométricos y espacios uniformes.
En el párrafo 1 se describe el isomorfismo uniforme existente entre la compleción de Hausdorff de un espacio métrico y la compleción de Weil del espacio uniforme separado asociado al espacio métrico.En el párrafo 2 se construye la compleción reducida de un espacio seudométrico y se describe el isomorfismo uniforme existente entre la compleción reducida de un espacio seudométrico y la compleción reducida del espacio uniforme asociado al espacio seudométrico.Finalmente, a lo largo del párrafo 3, se...
Relative compactness and recent common generalizations of metric and locally compact spaces
Remainders of metrizable and close to metrizable spaces
We continue the study of remainders of metrizable spaces, expanding and applying results obtained in [Fund. Math. 215 (2011)]. Some new facts are established. In particular, the closure of any countable subset in the remainder of a metrizable space is a Lindelöf p-space. Hence, if a remainder of a metrizable space is separable, then this remainder is a Lindelöf p-space. If the density of a remainder Y of a metrizable space does not exceed , then Y is a Lindelöf Σ-space. We also show that many of...
Remark on completely Baire-additive families in analytic spaces
Remark on locally fine spaces
Remarks on a game of Choquet
Remarks on best approximation in R-trees
An R-tree is a geodesic space for which there is a unique arc joining any two of its points, and this arc is a metric segment. If X is a closed convex subset of an R-tree Y, and if T: X → 2Y is a multivalued mapping, then a point z for which [...] is called a point of best approximation. It is shown here that if T is an ε-semicontinuous mapping whose values are nonempty closed convex subsets of Y, and if T has at least two distinct points of best approximation, then T must have a fixed point. We...
Remarks on certain uniform covering properties
Remarks on characterization of dimension of separable metrizable spaces
Remarks on coupled fixed point theorem in cone metric spaces
Remarks on e-locally fine spaces
Remarks on intrinsic isometries
Remarks on metrizable locales
Remarks on sequence covering images of metric spaces.
Remarks on sequence-covering maps
In this paper, we prove that each sequence-covering and boundary-compact map on -metrizable spaces is 1-sequence-covering. Then, we give some relationships between sequence-covering maps and 1-sequence-covering maps or weak-open maps, and give an affirmative answer to the problem posed by F.C. Lin and S. Lin in [Lin.F.C.and.Lin.S-2011].
Remarks on subsets of Cartesian products of metric spaces
Remarks on Yu’s ‘property A’ for discrete metric spaces and groups
Guoliang Yu has introduced a property on discrete metric spaces and groups, which is a weak form of amenability and which has important applications to the Novikov conjecture and the coarse Baum–Connes conjecture. The aim of the present paper is to prove that property in particular examples, like spaces with subexponential growth, amalgamated free products of discrete groups having property A and HNN extensions of discrete groups having property A.