• In functional analysis, a branch of mathematics, the Borel functional calculus is a functional calculus (that is, an assignment of operators from commutative...
    11 KB (1,698 words) - 08:50, 30 January 2025
  • considered here is that of Borel functions, the above describes the Koopman operator as it appears in Borel functional calculus. The domain of a composition...
    6 KB (746 words) - 20:38, 22 June 2025
  • be used to extend the continuous functional calculus to bounded Borel functions. For a bounded function g that is Borel measurable, define, for a proposed...
    26 KB (3,809 words) - 05:57, 18 January 2025
  • what the definitions should be. Borel functional calculus – Branch of functional analysis Continuous functional calculus Direct integral – Generalization...
    4 KB (570 words) - 10:26, 21 January 2025
  • the PVM is sometimes referred to as the spectral measure. The Borel functional calculus for self-adjoint operators is constructed using integrals with...
    16 KB (2,507 words) - 23:54, 11 April 2025
  • In mathematics, holomorphic functional calculus is functional calculus with holomorphic functions. That is to say, given a holomorphic function f of a...
    31 KB (5,482 words) - 13:11, 10 July 2025
  • Stone–von Neumann theorem Functional calculus Continuous functional calculus Borel functional calculus Hilbert–Pólya conjecture Lp space Hardy space Sobolev...
    5 KB (475 words) - 23:38, 19 July 2023
  • -\operatorname {Tr} \rho \log \rho .} Applying the spectral theorem, or Borel functional calculus for infinite dimensional systems, we see that it generalizes the...
    5 KB (827 words) - 13:37, 16 August 2023
  • Spectral theorem (category Theorems in functional analysis)
    theory of compact operators Spectral theory of normal C*-algebras Borel functional calculus Spectral theory Matrix decomposition Canonical form Jordan decomposition...
    25 KB (3,852 words) - 23:00, 22 April 2025
  • for both the spectral theorem and the Borel functional calculus. That is, if H is self-adjoint and f is a Borel function, f ( H ) = ∫ d E | Ψ E ⟩ f (...
    48 KB (8,156 words) - 10:24, 4 March 2025
  • in measure theory, a Borel measure on a topological space is a measure that is defined on all open sets (and thus on all Borel sets). Some authors require...
    10 KB (1,336 words) - 21:43, 12 March 2025
  • Thumbnail for Singular value decomposition
    Singular value decomposition (category Functional analysis)
    {\displaystyle \mathbf {M} ^{*}\mathbf {M} ,} ⁠ as given by the Borel functional calculus for self-adjoint operators. The reason why ⁠ U {\displaystyle...
    91 KB (14,599 words) - 19:05, 16 July 2025
  • composition operator. The general setting is provided by the Borel functional calculus. As a general rule, the transfer operator can usually be interpreted...
    6 KB (797 words) - 20:12, 6 January 2025
  • (functional analysis) Bohr–Mollerup theorem (gamma function) Bolzano's theorem (real analysis, calculus) Constant rank theorem ( multivariate calculus)...
    78 KB (6,296 words) - 20:31, 6 July 2025
  • transforms is expanded upon in the theory of time scale calculus. The integral form of the Borel transform F ( s ) = ∫ 0 ∞ f ( z ) e − s z d z {\displaystyle...
    76 KB (9,708 words) - 18:12, 27 July 2025
  • one can consider the continuous functional calculus, whose unique extension gives a canonical Borel functional calculus. By the Sherman–Takeda theorem...
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  • In mathematics, calculus on Euclidean space is a generalization of calculus of functions in one or several variables to calculus of functions on Euclidean...
    56 KB (11,455 words) - 10:56, 2 July 2025
  • Hilbert space, then it is equivalent to the usual orthogonality. Borel Borel functional calculus c c space. Calkin The Calkin algebra on a Hilbert space is...
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  • Resurgent function (category Functional analysis)
    theory of resurgent functions and alien calculus. The theory evolved from the summability of divergent series (see Borel summation) and treats analytic functions...
    5 KB (743 words) - 17:42, 6 February 2025
  • line. The Lebesgue–Stieltjes measure is a regular Borel measure, and conversely every regular Borel measure on the real line is of this kind. Lebesgue–Stieltjes...
    11 KB (1,624 words) - 06:45, 6 February 2024
  • Thumbnail for René Maurice Fréchet
    René Maurice Fréchet (category Functional analysts)
    of statistics and probability, as well as calculus. His dissertation opened the entire field of functionals on metric spaces and introduced the notion...
    13 KB (1,425 words) - 13:27, 29 March 2025
  • Thumbnail for Computable number
    reals. The concept of a computable real number was introduced by Émile Borel in 1912, using the intuitive notion of computability available at the time...
    24 KB (3,270 words) - 18:12, 15 July 2025
  • theorem of algebra Lambda calculus Invariance of domain Minkowski inequality Nash embedding theorem Open mapping theorem (functional analysis) Product topology...
    6 KB (593 words) - 20:11, 5 June 2023
  • Non-standard analysis Non-standard calculus Hyperinteger Hyperreal number Transfer principle Overspill Elementary Calculus: An Infinitesimal Approach Criticism...
    13 KB (1,012 words) - 21:35, 27 July 2025
  • series Lambert series Cesàro summation Euler summation Lambert summation Borel summation Summation by parts – transforms the summation of products of into...
    14 KB (1,603 words) - 13:55, 14 September 2024
  • lemma Fundamental lemma of the calculus of variations Hopf lemma Sard's lemma (singularity theory) Stechkin's lemma (functional and numerical analysis) Vitali...
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  • Thumbnail for Henri Lebesgue
    Henri Lebesgue (category Functional analysts)
    Sorbonne with the seminal thesis on "Integral, Length, Area", submitted with Borel, four years older, as advisor. Lebesgue married the sister of one of his...
    19 KB (2,242 words) - 20:29, 1 June 2025
  • In the calculus of variations, a subfield of mathematics, quasiconvexity is a generalisation of the notion of convexity. It is used to characterise the...
    12 KB (1,691 words) - 20:33, 19 June 2025
  • Thumbnail for Semi-continuity
    classification of Borel equivalence relations. In ergodic theory and topological dynamics, semicontinuity arises naturally when studying functionals on the space...
    40 KB (6,634 words) - 19:26, 19 July 2025
  • Theory I: Elements of Functional Analysis. ISBN 978-1461299288. Fonseca, Irene; Leoni, Giovanni. Modern Methods in the Calculus of Variations: Lp Spaces...
    23 KB (3,614 words) - 20:46, 30 April 2025