• The Schauder fixed-point theorem is an extension of the Brouwer fixed-point theorem to locally convex topological vector spaces, which may be of infinite...
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  • Poincaré–Birkhoff theorem proves the existence of two fixed points Ryll-Nardzewski fixed-point theorem Schauder fixed-point theorem Topological degree...
    11 KB (1,278 words) - 00:51, 3 February 2024
  • theorems for partial differential equations. The first result in the field was the Schauder fixed-point theorem, proved in 1930 by Juliusz Schauder (a...
    4 KB (497 words) - 21:45, 5 June 2025
  • Brouwer's fixed-point theorem is a fixed-point theorem in topology, named after L. E. J. (Bertus) Brouwer. It states that for any continuous function f...
    61 KB (8,516 words) - 14:55, 14 June 2025
  • methods in nonlinear analysis. Banach–Schauder theorem Schauder basis Schauder estimates Schauder fixed point theorem List of Polish mathematicians Kuratowski...
    6 KB (558 words) - 07:26, 24 January 2025
  • Schauder theorem may refer to: Schauder fixed-point theorem A result about compact operators, see Compact operator § Important properties This disambiguation...
    179 bytes (51 words) - 15:49, 7 September 2024
  • representation theorem (functional analysis, Hilbert space) Schauder fixed-point theorem (functional analysis) Schwartz kernel theorem (generalized functions)...
    78 KB (6,289 words) - 12:34, 6 June 2025
  • Brouwer fixed-point theorem, every compact and convex subset of a Euclidean space has the FPP. More generally, according to the Schauder-Tychonoff fixed point...
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  • Thumbnail for Invariant subspace problem
    journal. Lomonosov (1973) gave a very short proof using the Schauder fixed point theorem that if the operator T {\displaystyle T} on a Banach space commutes...
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  • "Lomonosov's spectacular invariant subspace theorem". Lomonosov gives a very short proof, using the Schauder fixed point theorem, that if a bounded linear operator...
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  • invariant-direction theorem, named after G. D. Birkhoff and O. D. Kellogg, is a generalization of the Brouwer fixed-point theorem. The theorem states that: Let...
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  • Thumbnail for Stefan Banach
    Hahn–Banach theorem, the Banach–Steinhaus theorem, the Banach–Mazur game, the Banach–Alaoglu theorem, and the Banach fixed-point theorem. Stefan Banach...
    27 KB (2,751 words) - 05:54, 29 May 2025
  • Thumbnail for Oscar Lanford
    Leray-Schauder fixed point theorem but establishing only the fixed point without the hyperbolicity. Work of Dennis Sullivan later showed that the fixed point...
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  • possible to prove that solutions exist using the continuity method or a fixed point theorem. A priori estimates were introduced and named by Sergei Natanovich...
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  • murdered in prison by the Gestapo, Warsaw Juliusz Schauder 1899–1943 Polish Schauder fixed point theorem, Schauder basis Jewish executed by the Gestapo, Lviv...
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  • Thumbnail for Timeline of Polish science and technology
    Schauder, Polish mathematician known for Schauder basis, Schauder fixed-point theorem, Schauder estimates, Banach–Schauder theorem and Faber-Schauder...
    124 KB (12,386 words) - 18:39, 12 June 2025
  • invertibility of the derivative at a point is sufficient for a map to be locally invertible, the Nash–Moser theorem requires the derivative to be invertible...
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  • Banach–Alaoglu theorem Banach–Mazur compactum Banach–Mazur game Banach–Mazur theorem Banach–Ruziewicz problem Banach-Saks theorem Banach-Schauder theorem Banach–Steinhaus...
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  • Orthonormal basis Schauder basis Basis (universal algebra) Basis of a matroid Generating set of an ideal: Gröbner basis Hilbert's basis theorem Generating set...
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  • Thumbnail for Jean Mawhin
    differential equations and the topological methods used there (fixed-point theorems, Leray-Schauder theory) and methods of nonlinear functional analysis. As...
    5 KB (582 words) - 09:59, 15 December 2024
  • gij. So it is automatic from elliptic regularity, and in particular the Schauder estimates, that if g is C2 and Ric(g) is Ck, α relative to a harmonic coordinate...
    20 KB (2,620 words) - 21:36, 18 April 2025
  • Thumbnail for Louis Nirenberg
    Math. 17 (1964), 101–134. Fan, Ky. A generalization of Tychonoff's fixed point theorem. Math. Ann. 142 (1960), 305–310. Fan, Ky. A minimax inequality and...
    62 KB (5,007 words) - 22:08, 6 June 2025
  • between Banach spaces is compact if and only if its adjoint is compact (Schauder's theorem). If T : X → Y {\displaystyle T:X\to Y} is bounded and compact, then:...
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  • Thumbnail for Mark Krasnoselsky
    contractions, fixed-point theorems for monotone operators and a combination of the Schauder fixed-point and contraction mapping theorems that was the genesis...
    12 KB (1,135 words) - 10:25, 10 May 2025
  • B_{V}}\sum _{w\in B_{W}}B(v,w)(v\otimes w)} making these maps similar to a Schauder basis for the vector space Hom ( V , W ; F ) {\displaystyle {\text{Hom}}(V...
    50 KB (8,677 words) - 07:36, 29 May 2025
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    considered, which using Zorn's Lemma, implies it admits a countably infinite Schauder basis rather than an orthonormal basis in the sense of linear algebra (Hamel...
    99 KB (13,587 words) - 21:25, 14 May 2025
  • Fréchet derivative is a completely continuous operator and for Rothe's fixed point theorem, proven in 1937. In 1978 a collection of papers was published in...
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  • Ryll-Nardzewski Ryll-Nardzewski fixed-point theorem. Schauder Schauder basis. Schatten Schatten class selection Michael selection theorem. self-adjoint A self-adjoint...
    22 KB (3,264 words) - 05:29, 7 June 2025