• The ArzelàAscoli theorem is a fundamental result of mathematical analysis giving necessary and sufficient conditions to decide whether every sequence...
    27 KB (3,819 words) - 12:15, 7 April 2025
  • Thumbnail for Cesare Arzelà
    earlier by Giulio Ascoli in the ArzelàAscoli theorem. He was a pupil of the Scuola Normale Superiore of Pisa where he graduated in 1869. Arzelà came from a...
    4 KB (311 words) - 06:40, 22 October 2024
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    Ascoli and Cesare Arzelà. The culmination of their investigations, the ArzelàAscoli theorem, was a generalization of the Bolzano–Weierstrass theorem...
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  • functions. In 1889, Italian mathematician Cesare Arzelà generalized Ascoli's Theorem into the ArzelàAscoli theorem, a practical sequential compactness criterion...
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  • {\displaystyle f_{\psi (k)}} are equicontinuous by the ArzelàAscoli theorem. By the fundamental theorem of calculus, z ′ ( t ) = f ( t , z ( t ) ) {\displaystyle...
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  • can be thought of as an Lp version of the ArzelàAscoli theorem, from which it can be deduced. The theorem is named after Maurice René Fréchet and Andrey...
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  • total variation norm. Since Prokhorov's theorem expresses tightness in terms of compactness, the ArzelàAscoli theorem is often used to substitute for compactness:...
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  • diagonalization argument similar to the one employed in the proof of the ArzelàAscoli theorem. Due to the constructive nature of its proof (as opposed to the...
    61 KB (8,306 words) - 04:30, 25 September 2024
  • (Riemannian geometry) ArzelàAscoli theorem (functional analysis) Baire category theorem (topology, metric spaces) Bing metrization theorem (general topology)...
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  • Banach–Alaoglu theorem on the weak-* compactness of the unit ball of the dual space of a normed vector space, and the ArzelàAscoli theorem characterizing...
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    Dini's theorem ArzelàAscoli theorem Sørensen, Henrik Kragh (2005). "Exceptions and counterexamples: Understanding Abel's comment on Cauchy's Theorem". Historia...
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  • role of this theorem in the theory of Gromov–Hausdorff convergence may be considered as analogous to the role of the ArzelàAscoli theorem in the theory...
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    with bounded Lipschitz constant forms an equicontinuous set. The ArzelàAscoli theorem implies that if {fn} is a uniformly bounded sequence of functions...
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  • then the transpose T′ is compact. This can be proved using the ArzelàAscoli theorem. When V is a Hilbert space, there is an antilinear isomorphism iV...
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  • compact set are precompact in the uniform topology; this is the ArzelàAscoli theorem. A metric space is separable if and only if it is homeomorphic to...
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  • category theorem Open mapping theorem (functional analysis) Closed graph theorem Uniform boundedness principle ArzelàAscoli theorem Banach–Alaoglu theorem Measure...
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  • norm, thus making C(X) a Banach space, hence a metric space. Then ArzelàAscoli theorem states that a subset of C(X) is compact if and only if it is closed...
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  • Some major theorems characterize relatively compact subsets, in particular in function spaces. An example is the ArzelàAscoli theorem. Other cases...
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  • Heine–Borel theorems, the intermediate value theorem and mean value theorem, Taylor's theorem, the fundamental theorem of calculus, the Arzelà-Ascoli theorem, the...
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  • (the Green's function of the problem). As a consequence of the ArzelàAscoli theorem, this integral operator is compact and existence of a sequence of...
    31 KB (4,722 words) - 09:25, 30 April 2025
  • tool for showing compact convergence is the ArzelàAscoli theorem. There are several versions of this theorem, roughly speaking it states that every sequence...
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  • Thus, Skorokhod space is a Polish space. By an application of the ArzelàAscoli theorem, one can show that a sequence ( μ n ) n = 1 , 2 , … {\displaystyle...
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  • {\mathcal {C}}(X)} is not reflexive, nor is it weakly complete. The ArzelàAscoli theorem holds: A subset K {\displaystyle K} of C ( X ) {\displaystyle {\mathcal...
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  • compact by the ArzelàAscoli theorem. In many physical situations, this assumption about the input set is a reasonable one. The theorem, however, gives...
    23 KB (4,305 words) - 21:18, 14 April 2025
  • consequence of the Ascoli-Arzelà theorem. Indeed, let (un) be a bounded sequence in C0,β(Ω). Thanks to the Ascoli-Arzelà theorem we can assume without...
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  • basepoint are naturally homeomorphic. Compactness follows from the ArzelàAscoli theorem since the image in C(XN) is equicontinuous and uniformly bounded...
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    _{f}(\delta )\to 0{\text{ as }}\delta \to 0} . By an application of the Arzelà-Ascoli theorem, one can show that a sequence ( μ n ) n = 1 ∞ {\displaystyle (\mu...
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    function spaces of Georg Cantor, Vito Volterra, Cesare Arzelà, Jacques Hadamard, Giulio Ascoli and others, Maurice Fréchet introduced the metric space...
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  • bounded subset of C(X). We have shown T(X) is equicontinuous, so the ArzelàAscoli theorem implies that T(X) is relatively compact. However, the previous bullet...
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  • compact subset of C; they are even holomorphic for |z| > R. So by the ArzelàAscoli theorem, passing to a subsequence if necessary, it can be assumed that both...
    61 KB (10,901 words) - 00:14, 30 January 2024