Results 321 to 330 of about 4,992,738 (351)
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Extensions of Lipschitz mappings into Hilbert space

, 1984
(Here ll&lltip is the Lipschitz constant of the function g.) A classical result of Kirszbraun's [14, p. 48] states that L(t2, n) = 1 for all n, but it is easy to see that L(X, n) ~ ~ as n ~ ~ for many metric spaces X. Marcus and Pisier [10] initiated the
W. Johnson, J. Lindenstrauss
semanticscholar   +1 more source

Theory of linear operators in Hilbert space

, 1961
linear operators in hilbert spaces | springerlink abstract. we recall some fundamental notions of the theory of linear operators in hilbert spaces which are required for a rigorous formulation of the rules of quantum mechanics in the one-body case.
N. Akhiezer, I. M. Glazman
semanticscholar   +1 more source

Hyperbolic Hilbert space [PDF]

open access: possibleAdvances in Applied Clifford Algebras, 2000
Let \(H\) be the hyperbolic complex plane and let \(\Xi\) be the divisors of zero region. An addition sub-semi-group \(S\) of \(H\) is called hyperbolic semi-linear space if \(o\in S\) and there exists an operation of multiplication by non-negative real numbers having the following properties: 1. \((ab)X = a(bX)\) 2. \((a+b)X = aX + bX\); 3. \(a(X+Y) =
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Cognition in Hilbert space

Behavioral and Brain Sciences, 2013
AbstractUse of quantum probability as a top-down model of cognition will be enhanced by consideration of the underlying complex-valued wave function, which allows a better account of interference effects and of the structure of learned and ad hoc question operators.
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Hilbert spaces of measures

Ukrainian Mathematical Journal, 1986
We continue the study of the structure of families of probability measures, started by \textit{I. Sh. Ibramkhalilov} and \textit{A. V. Skorokhod} [Estimates of parameters of stochastic processes (1980; Zbl 0429.60031)] and \textit{Z. S. Zerakidze} [Soobshch. Akad. Nauk Gruz. SSR 113, 37-39 (1984; Zbl 0562.60002)].
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HILBERT SPACE

1964
Publisher Summary This chapter focuses on Hilbert space. The chapter discusses the theory of bounded operators, and reviews the orthogonality and orthogonal systems of elements. Various theorems are proven. Linear operators, and bilinear and quadratic functionals are reviewed. The chapter reviews bounds of a self-conjugate operator.
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Frames in Hilbert Spaces

2003
The main feature of a basis \(\{f_{k}\}_{k=1}^{\infty }\) in a Hilbert space \(\mathcal{H}\) is that every \(f \in \mathcal{H}\) can be represented as a superposition of the elements f k in the basis: $$\displaystyle\begin{array}{rcl} f =\sum _{ k=1}^{\infty }c_{ k}(f)f_{k}.& &{}\end{array}$$ (5.1) The coefficients c k (f) are unique.
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Harmonic Analysis of Operators on Hilbert Space

, 1970
B. Szőkefalvi-Nagy   +3 more
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Operators in Hilbert spaces

1966
Hilbert space is a special case of Banach space, but it deserves separate consideration because of its importance in applications. In Hilbert spaces the general results deduced in previous chapters are strengthened and, at the same time, new problems arise.
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