Results 11 to 20 of about 274,570 (306)

On Weak Vitali Covering Properties [PDF]

open access: yesCanadian Mathematical Bulletin, 1978
There are now a number of Vitali covering properties which have been defined to handle problems arising in differentiation theory. Although some of these have received a unified treatment, as for example in the setting of Orlicz spaces in [1, p. 168], the underlying simplicity can be lost and the intimate connection with the original weak Vitali ...
B. S. Thomson
openaire   +2 more sources

Covering properties for LQ𝒰s with nested bases

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
This paper deals with problems on LQ𝒰 spaces which have a nested base; among others we give conditions so that a space (X,τ1,τ2) admits an LQ𝒰𝒰 which generates τ1 and 𝒰−1τ2, and give necessary and sufficient conditions for a space to be quasi-metrizable,
A. Andrikopoulos, J. N. Stabakis
doaj   +2 more sources

Characterization of Covering Dimension

open access: yesمجلة علوم ذي قار, 2019
        The present study focus and define a new kind of covering dimension and show some relations with other concepts using the ( ) sets in topological space. The current paper obtain some properties and characterization of this covering dimension. 
Nedaa Hasan Hajee
doaj   +8 more sources

On the topological covering properties by means of generalized open sets

open access: yesTopological Algebra and its Applications, 2023
By utilizing gg-open sets, we developed the ideas of GO-Mengerness and GO-Lindelöfness in this article. The structure of GO-compactness is compared to these topological covering features.
Sarkar Susmita   +2 more
doaj   +1 more source

On Covering Properties [PDF]

open access: yesMathematische Nachrichten, 1989
The results in this paper are contained in the author's Doctoral Thesis, written under the direction of Professor E. Outerelo.
openaire   +2 more sources

On countable star-covering properties

open access: yesApplied General Topology, 2007
We introduce two new notions of topological spaces called a countably starcompact space and a countably absolutely countably compact (= countably acc) space.
Yan-Kui Song
doaj   +1 more source

Scientific Evaluation of some Aesthetical properties for the Women's Head Covering Scarves Fabrics

open access: yesJournal of Architecture, Art & Humanistic Science, 2021
Women's head covering scarf fabric plays an important role in a woman's life as it is an integral part of her appearance and it needs to have aesthetical properties as well as the physiological comfort properties, where a large category of women living ...
Amira Elmoghazy   +2 more
doaj   +1 more source

NULL SETS AND COMBINATORIAL COVERING PROPERTIES [PDF]

open access: yesThe Journal of Symbolic Logic, 2021
AbstractA subset of the Cantor cube is null-additive if its algebraic sum with any null set is null. We construct a set of cardinality continuum such that: all continuous images of the set into the Cantor cube are null-additive, it contains a homeomorphic copy of a set that is not null-additive, and it has the property $\unicode{x3b3} $ , a strong ...
Piotr Szewczak, Tomasz Weiss
openaire   +3 more sources

On the Edge Covering Transversal Edge Domination in Graphs

open access: yesRatio Mathematica, 2023
Let G = (V,E) be any graph with nvertices and medges. An edge dominating set which intersects every minimum edge covering set in a graph Gis called an edge covering transversal edge dominating set of G.
E Sherin Danie, S Robinson Chellathurai
doaj   +1 more source

Covering property of Hofstadter’s butterfly [PDF]

open access: yesPhysical Review B, 1998
5 pages, 4 figures, to appear in Phys.
Ketzmerick, R.   +3 more
openaire   +2 more sources

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