• mathematics, a smooth functor is a type of functor defined on finite-dimensional real vector spaces. Intuitively, a smooth functor is smooth in the sense...
    3 KB (431 words) - 19:12, 4 March 2024
  • In mathematics, specifically category theory, a functor is a mapping between categories. Functors were first considered in algebraic topology, where algebraic...
    24 KB (3,513 words) - 02:56, 11 August 2024
  • series of a smooth function, hence the term "calculus of functors". Many objects of central interest in algebraic topology can be seen as functors, which are...
    7 KB (1,056 words) - 06:55, 4 March 2024
  • direct image functor, taking sheaves and their morphisms on the domain to sheaves and morphisms on the codomain, and an inverse image functor operating in...
    68 KB (10,956 words) - 07:22, 21 August 2024
  • Thumbnail for Differentiable manifold
    the manifold itself. The structure sheaf of M, denoted Ck, is a sort of functor that defines, for each open set U ⊂ M, an algebra Ck(U) of continuous functions...
    67 KB (9,495 words) - 02:22, 11 July 2024
  • Thumbnail for Vector bundle
    bundles in a functorial manner. This is made precise in the language of smooth functors. An operation of a different nature is the pullback bundle construction...
    31 KB (4,089 words) - 16:41, 9 April 2024
  • natural in the technical sense: if  f : M → N is a smooth map and Ωk is the contravariant smooth functor that assigns to each manifold the space of k-forms...
    21 KB (3,305 words) - 00:22, 24 September 2024
  • geometry, the exceptional inverse image functor is the fourth and most sophisticated in a series of image functors for sheaves. It is needed to express Verdier...
    5 KB (707 words) - 20:52, 15 February 2023
  • representation canonical bifunctor; but as (single) functor, of type [X, -], it appears as an adjoint functor to a functor of type (-×X) on objects; In functional...
    9 KB (1,196 words) - 09:49, 29 July 2024
  • Thumbnail for Pushforward (differential)
    called the tangent map. In this way, T {\displaystyle T} is a functor. Given a smooth map φ : M → N and a vector field X on M, it is not usually possible...
    14 KB (2,484 words) - 08:22, 13 June 2024