• 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...
    61 KB (8,424 words) - 10:13, 18 March 2025
  • Banach fixed-point theorem Bekić's theorem Borel fixed-point theorem Bourbaki–Witt theorem Browder fixed-point theorem Brouwer fixed-point theorem Rothe's...
    11 KB (1,278 words) - 00:51, 3 February 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) - 03:43, 30 April 2025
  • In mathematics, the Lefschetz fixed-point theorem is a formula that counts the fixed points of a continuous mapping from a compact topological space X...
    10 KB (1,580 words) - 15:46, 24 March 2025
  • the Banach fixed-point theorem (also known as the contraction mapping theorem or contractive mapping theorem or Banach–Caccioppoli theorem) is an important...
    17 KB (2,745 words) - 19:58, 29 January 2025
  • Thumbnail for Jordan curve theorem
    theorem can be proved from the Brouwer fixed point theorem (in 2 dimensions), and the Brouwer fixed point theorem can be proved from the Hex theorem:...
    27 KB (3,351 words) - 16:53, 4 January 2025
  • Thumbnail for Fixed point (mathematics)
    guaranteeing that, if it is satisfied, fixed-point iteration will always converge to a fixed point. The Brouwer fixed-point theorem (1911) says that any continuous...
    14 KB (1,696 words) - 09:26, 14 December 2024
  • In mathematics, a number of fixed-point theorems in infinite-dimensional spaces generalise the Brouwer fixed-point theorem. They have applications, for...
    3 KB (427 words) - 14:37, 7 June 2024
  • a fixed point, i.e. a point which is mapped to a set containing it. The Kakutani fixed point theorem is a generalization of the Brouwer fixed point theorem...
    25 KB (3,237 words) - 13:30, 28 September 2024
  • 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 same...
    59 KB (8,777 words) - 03:54, 12 April 2025
  • Thumbnail for L. E. J. Brouwer
    in his career, Brouwer proved a number of theorems in the emerging field of topology. The most important were his fixed point theorem, the topological...
    19 KB (2,156 words) - 16:51, 1 March 2025
  • mathematics, the Caristi fixed-point theorem (also known as the Caristi–Kirk fixed-point theorem) generalizes the Banach fixed-point theorem for maps of a complete...
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  • Thumbnail for Degree of a continuous mapping
    was first defined by Brouwer, who showed that the degree is homotopy invariant and used it to prove the Brouwer fixed point theorem. Less general forms...
    12 KB (1,903 words) - 19:48, 14 January 2025
  • by the Brouwer fixed-point theorem, every compact bounded convex set in a Euclidean space is a fixed-point space. The definition of a fixed-point space...
    2 KB (183 words) - 07:02, 25 June 2024
  • The theorem and its proof are due to L. E. J. Brouwer, published in 1912. The proof uses tools of algebraic topology, notably the Brouwer fixed point theorem...
    8 KB (1,185 words) - 20:59, 11 December 2024
  • has the fixed-point property by the Brouwer fixed-point theorem. A retract A of a space X with the fixed-point property also has the fixed-point property...
    4 KB (661 words) - 13:51, 25 September 2024
  • {\displaystyle f(x)-x} is SGDP, then f has a fixed-point. This is a discrete analogue of the Brouwer fixed-point theorem. [3.9] If X = Z n {\displaystyle \mathbb...
    9 KB (1,393 words) - 13:29, 2 March 2024
  • the Brouwer fixed-point theorem: that is, f {\displaystyle f} is continuous and maps the unit d-cube to itself. The Brouwer fixed-point theorem guarantees...
    25 KB (3,881 words) - 23:29, 29 July 2024
  • proof by John von Neumann. Von Neumann's original proof used the Brouwer fixed-point theorem on continuous mappings into compact convex sets, which became...
    138 KB (15,399 words) - 04:15, 2 May 2025
  • Thumbnail for Algebraic topology
    Blakers–Massey theorem Borsuk–Ulam theorem Brouwer fixed point theorem Cellular approximation theorem Dold–Thom theorem Eilenberg–Ganea theorem Eilenberg–Zilber...
    19 KB (2,093 words) - 02:29, 23 April 2025
  • Thumbnail for Hex (board game)
    Hex (board game) (category Theorems in topology)
    also has profound mathematical underpinnings related to the Brouwer fixed-point theorem, matroids and graph connectivity. The game was first published...
    34 KB (4,408 words) - 10:27, 3 February 2025
  • fulfilling Walras's Law is equivalent to Brouwer fixed-Point theorem. Thus, the use of Brouwer's fixed-point theorem is essential for showing that the equilibrium...
    58 KB (9,223 words) - 13:34, 5 March 2025
  • In mathematics, the Earle–Hamilton fixed point theorem is a result in geometric function theory giving sufficient conditions for a holomorphic mapping...
    5 KB (799 words) - 07:05, 31 December 2024
  • the theorem. A toy theorem of the Brouwer fixed-point theorem is obtained by restricting the dimension to one. In this case, the Brouwer fixed-point theorem...
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  • Thumbnail for Emanuel Sperner
    VI (1928) 265–272. Park, Sehie (1999). "Ninety Years of the Brouwer Fixed Point Theorem" (PDF). Vietnam Journal of Mathematics. 27 (3): 187–222. CiteSeerX 10...
    4 KB (275 words) - 20:25, 15 February 2025
  • equivalent to the Brouwer fixed-point theorem.: 545  It is sometimes called the Miranda theorem or the Bolzano–Poincaré–Miranda theorem. The picture on the...
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  • Thumbnail for Disk (mathematics)
    be bijective or even surjective); this is the case n=2 of the Brouwer fixed-point theorem. The statement is false for the open disk: Consider for example...
    10 KB (1,674 words) - 23:58, 28 March 2025
  • 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...
    15 KB (2,497 words) - 06:20, 26 March 2025
  • to do so. Envelope theorem Brouwer fixed point theorem Kakutani fixed point theorem for correspondences Michael selection theorem Ok, Efe (2007). Real...
    18 KB (1,875 words) - 03:09, 20 April 2025
  • diverges Banach fixed-point theorem Banach–Tarski paradox Basel problem Bolzano–Weierstrass theorem Brouwer fixed-point theorem Buckingham π theorem (proof in...
    6 KB (593 words) - 20:11, 5 June 2023