Results 141 to 150 of about 450 (171)
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A Characterization of the Fermat Point in Hilbert Spaces
Mediterranean Journal of Mathematics, 2013zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Characterization of projection lattices of hilbert spaces
International Journal of Theoretical Physics, 1986This paper uses methods of topological geometry to treat the problem of lattice coordinatization which is presented in Ch. 21.3 of \textit{E. B. Beltrametti} and \textit{G. Cassinelli} [The logic of quantum mechanics (1981; Zbl 0504.03026)]. Let \({\mathcal L}\) be an irreducible, complete, orthomodular, atomic lattice of length \(\geq 4\) enjoying the
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Characterization of hilbert spaces by orthomodular spaces
Communications in Algebra, 1995(1995). Characterization of hilbert spaces by orthomodular spaces. Communications in Algebra: Vol. 23, No. 1, pp. 219-243.
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A Characterization of Normal Distributions in Hilbert Space
Theory of Probability & Its Applications, 1957Theorem 1 gives an extension of the well known result of [2] to the case of random elements in Hilbert space.
Prokhorov, Yu. V., Fish, M.
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Characterizations of DMP inverse in a Hilbert space
Calcolo, 2015This paper extends the DMP inverse introduced in [the reviewer and \textit{Y.-M. Wei}, Appl. Math. Comput. 141, No. 2--3, 471--476 (2003; Zbl 1033.15003)] from matrices to operators on Hilbert spaces. The main tool used here is a triangular matrix representation for a bounded linear operator and its Moore-Penrose and Drazin expressions.
Anqi Yu, Chunyuan Deng
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On characterizations of the normal law in Hilbert space
Publicationes Mathematicae Debrecen, 2022The aim of the paper is to point out that most of the results and methods in \textit{C. G. Khatri}, J. Multivariate Anal. 9, 589-598 (1979; Zbl 0427.62027), are valid on Hilbert space, too.
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On Certain Implications Which Characterize Hilbert Space
The Annals of Mathematics, 1948One is concerned here with the following problem: Let e3 be a normed linear vector space admitting real scalars. What further conditions placed on the norm of the vectors in e3 implies that the space is a Hilbert space? The type of condition which is envisaged must be specified further.
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A characterization of positive semidefinite operators on a Hilbert space
Journal of Optimization Theory and Applications, 1986We show that, under certain conditions, a Hilbert space operator is positive semidefinite whenever it is positive semidefinite plus on a closed convex cone and positive semidefinite on the polar cone (with respect to the operator). This result is a generalization of a result by Han and Mangasarian on matrices.
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A Characterization of Complex Hilbert Spaces
Bulletin of the London Mathematical Society, 1970openaire +1 more source
Two Characterizations of Real Hilbert Space
The Annals of Mathematics, 1944Kakutani, Shizuo, Mackey, George W.
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