• In mathematical analysis, the Kakutani fixed-point theorem is a fixed-point theorem for set-valued functions. It provides sufficient conditions for a...
    25 KB (3,237 words) - 13:30, 28 September 2024
  • space Kakutani fixed-point theorem Kleene fixed-point theorem Knaster–Tarski theorem Lefschetz fixed-point theorem Nielsen fixed-point theorem Poincaré–Birkhoff...
    11 KB (1,278 words) - 00:51, 3 February 2024
  • 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 (8,376 words) - 00:56, 20 June 2024
  • The Schauder fixed-point theorem is an extension of the Brouwer fixed-point theorem to topological vector spaces, which may be of infinite dimension. It...
    3 KB (402 words) - 05:25, 15 May 2024
  • In mathematics, the Markov–Kakutani fixed-point theorem, named after Andrey Markov and Shizuo Kakutani, states that a commuting family of continuous affine...
    4 KB (658 words) - 22:16, 6 August 2023
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    equilibrium of a game is a fixed point of the game's best response correspondence. John Nash exploited the Kakutani fixed-point theorem for his seminal paper...
    13 KB (1,679 words) - 10:23, 18 September 2024
  • In mathematics, a number of fixed-point theorems in infinite-dimensional spaces generalise the Brouwer fixed-point theorem. They have applications, for...
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  • mathematics, Kakutani's theorem may refer to: the Kakutani fixed-point theorem, a fixed-point theorem for set-valued functions; Kakutani's theorem (geometry):...
    935 bytes (137 words) - 17:20, 18 December 2022
  • Thumbnail for Shizuo Kakutani
    critic for The New York Times. The Kakutani fixed-point theorem is a generalization of Brouwer's fixed-point theorem, holding for generalized correspondences...
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  • the Kakutani fixed-point theorem in his 1950 paper to prove existence of equilibria. His 1951 paper used the simpler Brouwer fixed-point theorem for the...
    59 KB (8,759 words) - 23:26, 9 September 2024
  • there is a point y in X such that y ∈ F ( y ) {\displaystyle y\in F(y)} . This is a discrete analogue of the Kakutani fixed-point theorem, and the function...
    9 KB (1,393 words) - 13:29, 2 March 2024
  • critic Shizuo Kakutani (1911–2004), Japanese-American mathematician Kakutani fixed-point theorem This page lists people with the surname Kakutani. If an internal...
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  • Markov-Kakutani fixed-point theorem - abelian semigroup of continuous affine self-maps on compact convex set in a topological vector space has a fixed point...
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  • to do so. Envelope theorem Brouwer fixed point theorem Kakutani fixed point theorem for correspondences Michael selection theorem Ok, Efe (2007). Real...
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  • be guaranteed; this is by Glicksberg's generalization of the Kakutani fixed point theorem. The class of continuous games is for this reason usually defined...
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    unit circle leaves the point (0,0) fixed. Notice that the Kakutani theorem does not assert that there exists exactly one fixed point. Reflecting the unit disk...
    58 KB (9,258 words) - 10:47, 18 July 2024
  • of PPAD-complete problems. Sperner's lemma Brouwer fixed-point theorem Kakutani fixed-point theorem Nash equilibrium Core of Balanced Games Fisher market...
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  • equations) Markov tree Markov's theorem Markov time Markov brothers' inequality Markov–Krein theorem Markov–Kakutani fixed-point theorem Quantum Markov semigroup...
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    operator Discontinuous linear map Kakutani fixed-point theorem – Fixed-point theorem for set-valued functions Open mapping theorem (functional analysis) – Condition...
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  • functional analysis, including the Hahn-Banach and Riesz–Markov–Kakutani representation theorems. Notice also that the neural network is only required to approximate...
    37 KB (5,024 words) - 20:38, 15 September 2024
  • proved from Sperner's lemma and can be used to prove the Brouwer fixed-point theorem. Let Δ n − 1 {\displaystyle \Delta _{n-1}} be an ( n − 1 ) {\displaystyle...
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    differential inclusions and related subjects as game theory, where the Kakutani fixed-point theorem for set-valued functions has been applied to prove existence...
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  • (mathematics) Discontinuous linear map Kakutani fixed-point theorem – Fixed-point theorem for set-valued functions Open mapping theorem (functional analysis) – Condition...
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  • Thumbnail for General equilibrium theory
    traditionally rely on fixed-point theorems such as Brouwer fixed-point theorem for functions (or, more generally, the Kakutani fixed-point theorem for set-valued...
    49 KB (6,061 words) - 23:41, 24 September 2024
  • Thumbnail for Borsuk–Ulam theorem
    Borsuk–Ulam theorem states that every continuous function from an n-sphere into Euclidean n-space maps some pair of antipodal points to the same point. Here...
    14 KB (2,431 words) - 17:06, 27 June 2024
  • Thumbnail for Tohoku University
    Inner Mongolia University Shizuo Kakutani (角谷 静夫), mathematician, professor at Yale, known for Kakutani fixed-point theorem Ryōji Chūbachi (中鉢良治), a Japanese...
    44 KB (3,029 words) - 14:55, 26 August 2024
  • value. Glicksberg, I. L. (1952). A Further Generalization of the Kakutani Fixed Point Theorem, with Application to Nash Equilibrium Points. Proceedings of...
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  • {\displaystyle \operatorname {Wel} } has a fixed-point, we would like to use the Kakutani fixed-point theorem. However, there is a technical issue that...
    20 KB (3,428 words) - 22:55, 27 August 2023
  • Brouwer fixed-point theorem to the unit ball in H. The existence of such counter-examples that are homeomorphisms was shown in 1943 by Shizuo Kakutani, who...
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  • space has a fixed point. For locally compact abelian groups, this property is satisfied as a result of the Markov–Kakutani fixed-point theorem. Irreducible...
    25 KB (3,223 words) - 23:53, 27 July 2024