Results 11 to 20 of about 38,779 (263)

On Compactness and Sequential Compactness [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
Let X X be a compact space of cardinality less than or equal to
openaire   +2 more sources

Topological approach to analyzing compactness and connectivity of settlement systems considering terrain constraints (case study of the Saratov Region) [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
The article examines the application of topological concepts for analysing the structure and assessing the compactness of a regional settlement system.
Danilov, Vladimir Anatolievich   +2 more
doaj   +1 more source

A topological proof of Sklar’s theorem in arbitrary dimensions

open access: yesDependence Modeling, 2022
Copulas are appealing tools in multivariate probability theory and statistics. Nevertheless, the transfer of this concept to infinite dimensions entails some nontrivial topological and functional analytic issues, making a deeper theoretical understanding
Benth Fred Espen   +2 more
doaj   +1 more source

New forms of strong compactness in terms of ideals [PDF]

open access: yes, 2016
The aim of this paper is to introduce and study new types of strong compactness, modulo an ideal, called ρI-compactness and σI-compactness. Several of their properties are presented and some effects of various kinds of functions on them are studied.
Pachon Rubiano, Néstor Raúl
core   +1 more source

DO POST-SOCIALIST URBAN AREAS MAINTAIN THEIR SUSTAINABLE COMPACT FORM? ROMANIAN URBAN AREAS AS CASE STUDY [PDF]

open access: yesJournal of Urban and Regional Analysis, 2022
The compact city is regarded as an important concept in promoting sustainable development, especially within the European Union. The socialist urban planning system maintained a high compactness of the urban areas through almost exclusive predominance of
Simona Raluca GRĂDINARU   +2 more
doaj   +1 more source

Evaluation of concrete mechanical strength through porosity

open access: yesMateriales de Construccion, 2004
The increasing on voids or pores in any material - if the rest of characteristics remains equal -always causes a decrease in their mechanical strength since the ratio volume/resistant mass is lower Following all these fact a well known conclusion rises ...
M. Olivares   +3 more
doaj   +1 more source

The compactness and the concentration compactness via p-capacity [PDF]

open access: yesAnnali di Matematica Pura ed Applicata (1923 -), 2021
27 pages, Changes in the hypothesis of Theorem 1.4 and Theorem 1 ...
Anoop, T. V., Das, Ujjal
openaire   +2 more sources

Morfologia de agregados do solo avaliada por meio de análise de imagens Morphology of soil aggregates evaluated by images analysis

open access: yesRevista Brasileira de Ciência do Solo, 2004
O uso intensivo do solo, aliado a condições inadequadas de manejo, concorre para a deterioração de suas propriedades físicas e isso se deve, principalmente, às modificações em sua estrutura.
N. Olszevski   +5 more
doaj   +1 more source

Lagrangian flows for vector fields with gradient given by a singular integral [PDF]

open access: yes, 2013
We prove quantitative estimates on ows of ordinary di erential equations with vector field with gradient given by a singular integral of an L1 function.
Crippa, Gianluca, Bouchut, Francois
core   +1 more source

On Countable Compactness and Sequential Compactness [PDF]

open access: yesProceedings of the American Mathematical Society, 1984
If a countably compact T 3 {T_3} space X X can be expressed as a union of less then c c many first countable subspaces, then MA implies that X X is sequentially compact.
openaire   +1 more source

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