• mathematics, total-boundedness is a generalization of compactness for circumstances in which a set is not necessarily closed. A totally bounded set can be...
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  • Thumbnail for Metric space
    The space M is called precompact or totally bounded if for every r > 0 there is a finite cover of M by open balls of radius r. Every totally bounded space...
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  • areas of mathematics, a set in a topological vector space is called bounded or von Neumann bounded, if every neighborhood of the zero vector can be inflated...
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  • Thumbnail for Compact space
    admits no finite subcover. It is complete but not totally bounded. For an ordered space (X, <) (i.e. a totally ordered set equipped with the order topology)...
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  • Thumbnail for Bounded set
    metric space (M, d) is a bounded metric space (or d is a bounded metric) if M is bounded as a subset of itself. Total boundedness implies boundedness. For...
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  • of the topology used, in a particular theory. Compactly embedded Totally bounded space page 12 of V. Khatskevich, D.Shoikhet, Differentiable Operators...
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  • definition of boundedness can be weakened a bit; E {\displaystyle E} is bounded if and only if every countable subset of it is bounded. A set is bounded if and...
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  • Thumbnail for Connected space
    resulting space, with the quotient topology, is totally disconnected. However, by considering the two copies of zero, one sees that the space is not totally separated...
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  • the measure space ( X , A , μ ) {\displaystyle (X,{\mathcal {A}},\mu )} is called a finite measure space or a totally finite measure space. For any measurable...
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  • Thumbnail for Ball (mathematics)
    n-space, every ball is bounded by a hypersphere. The ball is a bounded interval when n = 1, is a disk bounded by a circle when n = 2, and is bounded by...
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  • space is complete, though complete spaces need not be compact. In fact, a metric space is compact if and only if it is complete and totally bounded....
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  • discrete uniform or metric space is complete. Combining the above two facts, every discrete uniform or metric space is totally bounded if and only if it is...
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  • Wijsman topologies on Cl(X) coincide if and only if (X, d) is a totally bounded space. Hausdorff distance Kuratowski convergence Vietoris topology Hemicontinuity...
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  • Uniform property (category Uniform spaces)
    converges (i.e. has a limit point in X). Totally bounded (or Precompact). A uniform space X is totally bounded if for each entourage E ⊂ X × X there is...
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  • subset of a totally ordered set X is totally ordered for the restriction of the order on X. The unique order on the empty set, ∅, is a total order. Any...
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  • Heine–Borel theorem (category Properties of topological spaces)
    vector space X {\displaystyle X} is said to have the Heine–Borel property (R.E. Edwards uses the term boundedly compact space) if each closed bounded set...
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  • Thumbnail for Hilbert space
    convergent sequence {xn} is bounded, by the uniform boundedness principle. Conversely, every bounded sequence in a Hilbert space admits weakly convergent...
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  • complete and totally bounded. A Fréchet–Montel space is a Fréchet space that is also a Montel space. A separable Fréchet space is a Montel space if and only...
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  • topology of uniform convergence on totally bounded subsets (instead of bounded subsets) in the definition of dual space X ′ . {\displaystyle X^{\prime }...
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  • applied to Banach spaces. Although boundedness is the same as continuity for linear maps between normed spaces, the term "bounded" is more commonly used...
    102 KB (17,019 words) - 16:58, 14 April 2025
  • functions of bounded variation on a compact interval are exactly those f which can be written as a difference g − h, where both g and h are bounded monotone...
    61 KB (8,441 words) - 20:55, 29 April 2025
  • lower) bound is said to be bounded from above or majorized (respectively bounded from below or minorized) by that bound. The terms bounded above (bounded below)...
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  • Schwartz spaces are topological vector spaces (TVS) whose neighborhoods of the origin have a property similar to the definition of totally bounded subsets...
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  • into the space of all possible words. It gives an important limitation on the efficiency with which any error-correcting code can utilize the space in which...
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  • space. In a locally convex space, the convex hull and the disked hull of a totally bounded set is totally bounded. In a complete locally convex space...
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  • as path isometry. Asymptotic cone Autoparallel the same as totally geodesic. Banach space Barycenter, see center of mass. Bi-Lipschitz map. A map f :...
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  • Thumbnail for Ordered vector space
    functionals on a preordered vector space X {\displaystyle X} that map every order interval into a bounded set is called the order bound dual of X {\displaystyle...
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  • into Y is a compact operator: any bounded set in X is totally bounded in Y, i.e. every sequence in such a bounded set has a subsequence that is Cauchy...
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  • something totally other than ourselves—"something numinous"—and the conflicting desire for a beauty that makes us feel no longer "lost in space", but at...
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  • be of bounded variation precisely if its total variation is finite. The total variation is a norm defined on the space of measures of bounded variation...
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