Results 31 to 40 of about 762,341 (222)
Isometries of ∗ -Invariant Subspaces [PDF]
Transactions of the American Mathematical Society, 1974 We consider families of increasing ∗ ^\ast -invariant subspaces of H 2 ( D ) {H^2}(D) , and from these we construct canonical isometrics from certain L 2 {L^2} spaces to
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Abelian, amenable operator algebras are similar to C*-algebras [PDF]
, 2013 Suppose that H is a complex Hilbert space and that B(H) denotes the bounded linear operators on H. We show that every abelian, amenable operator algebra is similar to a C*-algebra. We do this by showing that if A is an abelian subalgebra of B(H) with the
Alexey, I. Popov, Laurent W. Marcoux
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Adaptive interference suppression based on an invariant subspace of matrices matching for a horizontal array in underwater acoustics [PDF]
JASA Express LettersPassive detection of target-of-interest (TOI) within strong interferences poses a challenge. This paper introduces an adaptive interference suppression based on an invariant subspace of matrix matching. Assume that the TOI-bearing intervals are known. We
Xueli Sheng +4 more
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Invariant subspace method: A tool for solving fractional partial differential equations [PDF]
, 2016 In this paper invariant subspace method has been employed for solving linear and non-linear time and space fractional partial differential equations involving Caputo derivative.
Sangita Choudhary +1 more
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Randomized Subspace Iteration: Analysis of Canonical Angles and Unitarily Invariant Norms [PDF]
SIAM Journal on Matrix Analysis and Applications, 2018 This paper is concerned with the analysis of the randomized subspace iteration for the computation of low-rank approximations. We present three different kinds of bounds.
A. Saibaba
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International Journal of Mathematics and Mathematical Sciences, 2003 We introduce the concept of quasireducible operators. Basic properties and illustrative examples are considered in some detail in order to situate the class of quasireducible operators in its due place.
C. S. Kubrusly
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Invariant subspaces with no generator and a problem of H. Helson [PDF]
, 2015 In the almost periodic context, any $H_0^2-$space cannot be generated by one of its elements. Together with cocycle argument, this derives that there exist all kinds of invariant subspaces without single generator, from which we can answer some questions
Tanaka, Jun-ichi
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Invariant subspaces, exact solutions and stability analysis of nonlinear water wave equations
Journal of Ocean Engineering and Science, 2020 The key purpose of the present research is to derive the exact solutions of nonlinear water wave equations (NLWWEs) in oceans through the invariant subspace scheme (ISS).
K. Hosseini +6 more
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The continuum limit of quantum gravity at first order in perturbation theory
Journal of High Energy Physics, 2020 The Wilsonian renormalization group (RG) properties of the conformal factor of the metric are profoundly altered by the fact that it has a wrong-sign kinetic term.
Alex Mitchell, Tim R. Morris
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Covariants, Invariant Subsets, and First Integrals [PDF]
Épijournal de Géométrie Algébrique, 2020 Let $k$ be an algebraically closed field of characteristic 0, and let $V$ be a finite-dimensional vector space. Let $End(V)$ be the semigroup of all polynomial endomorphisms of $V$.
Frank Grosshans, Hanspeter Kraft
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