• 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
  • 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) - 02:13, 21 July 2025
  • 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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  • space Kakutani fixed-point theorem Kleene fixed-point theorem Knaster–Tarski theorem Lefschetz fixed-point theorem Nielsen fixed-point theorem Poincaré–Birkhoff...
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  • 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...
    6 KB (469 words) - 22:26, 3 July 2025
  • references). Fixed-point theorems Banach fixed-point theorem Kakutani fixed-point theorem F. F. Bonsall, Lectures on some fixed point theorems of functional analysis...
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  • 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
  • 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...
    60 KB (8,776 words) - 15:10, 29 July 2025
  • Thumbnail for Fixed point (mathematics)
    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...
    14 KB (1,696 words) - 10:48, 30 May 2025
  • 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
  • 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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  • 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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  • 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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  • 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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  • 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...
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  • 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...
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  • 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...
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  • Thumbnail for Paradox of tolerance
    well-known to have remarked long before Popper: "[i]f tolerance is taken to the point where it tolerates the destruction of those same principles that made tolerance...
    25 KB (2,908 words) - 07:12, 21 July 2025
  • Abilene paradox Centipede game Collective action problem Externality Folk theorem (game theory) Free-rider problem Gift-exchange game Hobbesian trap Innocent...
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  • Thumbnail for Tic-tac-toe
    successful landing and must be careful not to block themself. Hales–Jewett theorem m,n,k-game Number Scrabble Garcia, Dan. "GamesCrafters: Tic-Tac-Toe". gamescrafters...
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  • Thumbnail for Arrow's impossibility theorem
    Arrow's impossibility theorem is a key result in social choice theory showing that no ranked-choice procedure for group decision-making can satisfy the...
    72 KB (6,839 words) - 04:27, 25 July 2025
  • In game theory, Zermelo's theorem is a theorem about finite two-person games of perfect information in which the players move alternately and in which...
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  • Thumbnail for Monty Hall problem
    a formal application of Bayes' theorem⁠ — among them books by Gill and Henze. Use of the odds form of Bayes' theorem, often called Bayes' rule, makes...
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  • In game theory, a focal point (or Schelling point) is a solution that people tend to choose by default in the absence of communication in order to avoid...
    12 KB (1,698 words) - 17:36, 13 June 2025
  • Thumbnail for Closed graph theorem
    closed 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 Set-valued function
    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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  • 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...
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  • In combinatorial game theory, the Sprague–Grundy theorem states that every impartial game under the normal play convention is equivalent to a one-heap...
    20 KB (3,353 words) - 14:05, 25 June 2025
  • value. Glicksberg, I. L. (1952). A Further Generalization of the Kakutani Fixed Point Theorem, with Application to Nash Equilibrium Points. Proceedings of...
    2 KB (234 words) - 23:20, 29 July 2025