Results 261 to 270 of about 274,570 (306)

Peripheral Covering Properties Imply Covering Properties

open access: yesCanadian Journal of Mathematics, 1968
Recently several papers (11; 12; 13; 14) have been published in which it is shown that a Moore space (normal, in one case) is metrizable if it has the peripheral version (in the sense defined below) of a certain covering property that was known to imply metrizability of Moore spaces. Each of these metrization theorems can be proved more easily by using
E. E. Grace
openaire   +2 more sources

Permutation Groups and Covering Properties

open access: yesJournal of the London Mathematical Society, 2001
The author considers the relationships between a number of cardinal invariants of the continuum. A subgroup \(G\) of the full symmetric group \(\text{Sym}(\omega)\) is `cofinitary' if each non-identity element has only finitely many fixed points [see \textit{P. J. Cameron}, Bull. Lond. Math. Soc. 28, No.
Yi Zhang, Zhang, Y
openaire   +3 more sources

Covering properties of ideals

Archive for Mathematical Logic, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marek Balcerzak   +2 more
openaire   +2 more sources

Covering Dimension and Universality Property on Frames

Order, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Themba Dube   +4 more
openaire   +1 more source

On fuzzy covering properties

Periodica Mathematica Hungarica, 2007
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Covering Properties of Convex Sets

Bulletin of the London Mathematical Society, 1986
Partant d'un recouvrement ouvert de certains convexes d'un espace vectoriel topologique séparé, l'A. obtient un recouvrement fermé contenu dans le premier. Le caractère fermé du recouvrement lui permet alors d'utiliser un résultat classique afin d'obtenir une démonstration élégante d'un résultat récent de Ky Fan.
openaire   +1 more source

The diamond covering property axiom

Mathematical Logic Quarterly, 2016
The Covering Property Axiom, which attempts to capture some of the combinatorics of the Sacks model, the model obtained from by countable support iteration of length of the Sacks forcing, seems to miss a Suslin tree. We add a diamond polish to the axiom to remedy this.
openaire   +2 more sources

Problems on star-covering properties

2007
We consider some questions about properties defined in terms of stars with respect to open ...
BONANZINGA, Maddalena, MATVEEV M. V.
openaire   +2 more sources

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