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  2. Algebraic topology - Wikipedia

    en.wikipedia.org/wiki/Algebraic_topology

    Algebraic topology is a branch of mathematics that uses tools from abstract algebra to study topological spaces. The basic goal is to find algebraic invariants that classify topological spaces up to homeomorphism, though usually most classify up to homotopy equivalence. Although algebraic topology primarily uses algebra to study topological ...

  3. Topological game - Wikipedia

    en.wikipedia.org/wiki/Topological_game

    A different meaning for topological game, the concept of “topological properties defined by games”, was introduced in the paper of Rastislav Telgársky, [4] and later "spaces defined by topological games"; [5] this approach is based on analogies with matrix games, differential games and statistical games, and defines and studies topological ...

  4. William Fulton (mathematician) - Wikipedia

    en.wikipedia.org/wiki/William_Fulton_(mathematician)

    He is, as of 2011, a professor at the University of Michigan. [2] As of 2024, Fulton had supervised the doctoral work of 24 students at Brown, Chicago, and Michigan. Fulton is known as the author or coauthor of a number of popular texts, including Algebraic Curves and Representation Theory.

  5. List of theorems - Wikipedia

    en.wikipedia.org/wiki/List_of_theorems

    Nilpotence theorem (algebraic topology) Poincaré duality theorem (algebraic topology of manifolds) Seifert–van Kampen theorem (algebraic topology) Simplicial approximation theorem (algebraic topology) Stallings–Zeeman theorem (algebraic topology) Sullivan conjecture (homotopy theory) Universal coefficient theorem (algebraic topology ...

  6. Euler characteristic - Wikipedia

    en.wikipedia.org/wiki/Euler_characteristic

    In mathematics, and more specifically in algebraic topology and polyhedral combinatorics, the Euler characteristic (or Euler number, or Euler–Poincaré characteristic) is a topological invariant, a number that describes a topological space's shape or structure regardless of the way it is bent.

  7. Brouwer fixed-point theorem - Wikipedia

    en.wikipedia.org/wiki/Brouwer_fixed-point_theorem

    The Brouwer fixed point theorem was one of the early achievements of algebraic topology, and is the basis of more general fixed point theorems which are important in functional analysis. The case n = 3 first was proved by Piers Bohl in 1904 (published in Journal für die reine und angewandte Mathematik ). [ 14 ]

  8. Category:Algebraic topology - Wikipedia

    en.wikipedia.org/wiki/Category:Algebraic_topology

    Algebraic topology is a branch of mathematics in which tools from abstract algebra are used to study topological spaces Subcategories. This category has the following ...

  9. Betti number - Wikipedia

    en.wikipedia.org/wiki/Betti_number

    In algebraic topology, the Betti numbers are used to distinguish topological spaces based on the connectivity of n-dimensional simplicial complexes.For the most reasonable finite-dimensional spaces (such as compact manifolds, finite simplicial complexes or CW complexes), the sequence of Betti numbers is 0 from some point onward (Betti numbers vanish above the dimension of a space), and they ...