Results 1 to 10 of about 70,365 (263)
The Atkinson Theorem in Hilbert C*-Modules over C*-Algebras of Compact Operators [PDF]
Abstract and Applied Analysis, 2007 The concept of unbounded Fredholm operators on Hilbert C*-modules over an arbitrary C*-algebra is discussed and the Atkinson theorem is generalized for bounded and unbounded Feredholm operators on Hilbert C*-modules over C*-algebras of compact operators.
A. Niknam, K. Sharifi
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Extensional and Intensional Semantics of Bounded and Unbounded Nondeterminism [PDF]
Logical Methods in Computer Science, 2021 We give extensional and intensional characterizations of functional programs with nondeterminism: as structure preserving functions between biorders, and as nondeterministic sequential algorithms on ordered concrete data structures which compute them.
James Laird
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Optimal control of elliptic variational inequalities with bounded and unbounded operators [PDF]
Mathematical Control & Related Fields, 2021 <p style='text-indent:20px;'>This paper examines optimal control problems governed by elliptic variational inequalities of the second kind with bounded and unbounded operators. To tackle the bounded case, we employ the polyhedricity of the test set appearing in the dual formulation of the governing variational inequality.
Betz, Livia, Yousept, Irwin
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On nth roots of bounded and unbounded quasinormal operators
Annali di Matematica Pura ed Applicata (1923 -), 2022 AbstractIn a recent paper (JFA 278:108342, 2020), R. E. Curto, S. H. Lee and J. Yoon asked the following question: LetTbe a subnormal operator, and assume that$$T^2$$ T 2 is quasinormal. Does it follow thatTis quasinormal? In (JFA 280:109001, 2021) we answered
Pietrzycki, Paweł, Stochel, Jan
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On linear chaos in function spaces
Demonstratio Mathematica, 2022 We show that, in Lp(0,∞){L}_{p}\left(0,\infty ) (1 ...
Jimenez John M., Markin Marat V.
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Bounded and unbounded operators between Köthe spaces [PDF]
Studia Mathematica, 2002 The authors study in terms of the corresponding Köthe matrices when every continuous linear operator between two Köthe spaces is bounded, the consequences of the existence of unbounded continuous linear operators, and related topics.
Djakov, P. B., Ramanujan, M. S.
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Many bounded versions of undecidable problems are NP-hard
SciPost Physics, 2023 Several physically inspired problems have been proven undecidable; examples are the spectral gap problem and the membership problem for quantum correlations.
Andreas Klingler, Mirte van der Eyden, Sebastian Stengele, Tobias Reinhart, Gemma de las Cuevas
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Fractional powers of higher-order vector operators on bounded and unbounded domains
Proceedings of the Edinburgh Mathematical Society, 2022 AbstractUsing the $H^{\infty }$-functional calculus for quaternionic operators, we show how to generate the fractional powers of some densely defined differential quaternionic operators of order $m\geq 1$, acting on the right linear quaternionic Hilbert space $L^{2}(\Omega,\mathbb {C}\otimes \mathbb {H})$. The operators that we consider are of the type
Baracco, L +3 more
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On Hahn-Banach theorem and some of its applications
Open Mathematics, 2022 First, this work provides an overview of some of the Hahn-Banach type theorems. Of note, some of these extension results for linear operators found recent applications to isotonicity of convex operators on a convex cone.
Olteanu Octav
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Estimates for the Differences of Certain Positive Linear Operators
Mathematics, 2020 The present paper deals with estimates for differences of certain positive linear operators defined on bounded or unbounded intervals. Our approach involves Baskakov type operators, the kth order Kantorovich modification of the Baskakov operators, the ...
Ana Maria Acu, Sever Hodiş, Ioan Rașa
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