Results 81 to 90 of about 4,438,790 (210)
Locally compact, $\omega_1$-compact spaces
, 2017 An $\omega_1$-compact space is a space in which every closed discrete subspace is countable. We give various general conditions under which a locally compact, $\omega_1$-compact space is $\sigma$-countably compact, i.e., the union of countably many countably compact spaces. These conditions involve very elementary properties.
Nyikos, Peter, Zdomskyy, Lyubomyr
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CONTRACTIVE FAMILIES ON COMPACT SPACES [PDF]
Mathematika, 2014 A family f_1,...,f_n of operators on a complete metric space X is called contractive if there exists lambda < 1 such that for any x,y in X we have d(f_i(x),f_i(y)) leq lambda d(x,y) for some i. Stein conjectured that for any contractive family there is some composition of the operators f_i that has a fixed point. Austin gave a counterexample to this,
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Iris: Deep Space Small Satellite Radio [PDF]
, 2017 With nanosatellites being used for deep space missions, the need for a unique communications architecture to relay valuable mission data back to NASA’s Deep Space Network (DSN) is ...
Space Dynamics Laboratory
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Functionally compact spaces [PDF]
Pacific Journal of Mathematics, 1969 Dickman, R. F., Zame, A.
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On strong form of Arzela convergence
International Journal of Mathematics and Mathematical Sciences, 1997 We define some new type of convergence of nets of functions which is formulated in terms of open covers. It preserves continuity and under some assumptions implies (or coincides with) the Arzela quasi-uniform convergence.
Janina Ewert
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Some properties of b-weakly compact operators on Banach lattices
پژوهشهای ریاضی, 2021 In this paper we give some necessary and sufficient conditions for which each Banach lattice is space and we study some properties of b-weakly compact operators from a Banach lattice into a Banach space .
Kazem Haghnejad azar, Akbar Bahramnezhad
doaj
Kansas-Nebraska Big Blue River Compact Administration Documents, 2010
, 2010 application/pdfThis is an incomplete collection of documents by and about the Kansas-Nebraska Big Blue River Compact Administration and the Kansas-Nebraska Big Blue River Compact.; Kansas and Nebraska entered the Big Blue River Compact in 1971: A.
Kansas-Nebraska Big Blue River Compact Administration.
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Free Subspaces of Free Locally Convex Spaces
Journal of Function Spaces, 2018 If X and Y are Tychonoff spaces, let L(X) and L(Y) be the free locally convex space over X and Y, respectively. For general X and Y, the question of whether L(X) can be embedded as a topological vector subspace of L(Y) is difficult.
Saak S. Gabriyelyan, Sidney A. Morris
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The compactness of countably compact spaces [PDF]
Pacific Journal of Mathematics, 1970 openaire +3 more sources
On Products of F-Compact Spaces
Siberian Mathematical Journal, 2018 Let \(X\) and \(Y\) be topological spaces, \(A\subset X\), and \(\alpha\), \(\beta\) and \(\gamma\) be ordinals. Let \(H\) be Alexandroff's ``double arrow'' space. A surjective map \(f:X\rightarrow Y\) is called \textit{fully closed} if for every \(y\in Y\) and every finite open cover \(O_1,\ldots,O_k\) of \(f^{-1}(y)\), the set \(\bigcup^k_{i=1}f ...
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