Results 31 to 40 of about 205 (147)
Dual Piecewise Analytic Bundle Shift Models of Linear Operators [PDF]
, 1996 LetTbe a Banach space operator with empty point spectrum, whose essential spectrum lies on a finite system of (possibly intersecting) curves. Under certain conditions onT, dual analytic representations ofTas a kind of bundle shift and of T* as an ...
Yakubovich, D.V.
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On the essential commutant of analytic Toeplitz operators associated with spherical isometries [PDF]
, 2011 Let T∈B(H)n be an essentially normal spherical isometry with empty point spectrum on a separable complex Hilbert space H, and let AT⊂B(H) be the unital dual operator algebra generated by T. In this note we show that every operator S∈B(H) in the essential
Eschmeier, Jörg +5 more
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A Quantised Push‐Sum Distributed Adaptive Momentum Algorithm for Optimisation Over Directed Networks
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT In this paper, we investigate a distributed constrained optimisation problem over directed networks. The agents in the networks conduct local computations and communications, endeavouring to collaboratively minimise the aggregation of all locally known convex cost functions subject to a global constraint set.
Qingguo Lü +6 more
wiley +1 more source
Toeplitz separability, entanglement, and complete positivity using operator system duality [PDF]
, 2023 A new proof is presented of a theorem of L.~Gurvits, which states that the cone of positive block-Toeplitz matrices with matrix entries has no entangled elements.
Farenick, Douglas, McBurney, Michelle
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A new conservative matrix derived by Catalan numbers and its matrix domain in the spaces c and c(0) [PDF]
, 2020 The main purpose of this paper is to define a new conservative matrix by means of the fascinating sequence of Catalan numbers and study the matrix domain of this newly introduced matrix in the classical sequence spaces c and .
Ilkhan, Merve
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Filomat, 2022 In this paper, we characterize the hyponormal dual Toeplitz operators with special symbols on the orthogonal complement of the pluriharmonic Bergman space of the unit ball. Also we completely characterize the pluriharmonic symbols for (semi)commuting dual Toeplitz operators.
Yinyin Hu, Yufeng Lu, Yixin Yang
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Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1572-1588, October 2026.ABSTRACT Purpose To develop a software‐based active electromagnetic interference (EMI) suppression (AES) framework on whole‐body multi‐channel MRI systems for reliable MRI and MR thermometry during MRI‐guided microwave ablation (MWA). Methods In addition to primary imaging coils, an unloaded standard body array coil was positioned outside the imaging ...
Qing Dai +5 more
wiley +1 more source
Operators on the orthogonal complement of the Dirichlet space [PDF]
, 2009 In this paper we prove that a dual Hankel operator is zero if and only if its symbol is orthogonal to the Dirichlet space in the Sobolev space, and characterize the symbols for (semi-)commuting dual Toeplitz operators on the orthogonal complement of the ...
Yu, Tao
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Asian Journal of Control, Volume 28, Issue 4, Page 1722-1733, July 2026.Abstract Large swarms often adopt a hierarchical network structure that incorporates information aggregation. Although this approach offers significant advantages in terms of communication efficiency and computational complexity, it can also lead to degradation due to information constraints.
Kento Fujita, Daisuke Tsubakino
wiley +1 more source
Toeplitz operators on finite and infinite dimensional spaces with associated psi *-Fréchet algebras [PDF]
, 2006 The present thesis is a contribution to the multi-variable theory of Bergman and Hardy Toeplitz operators on spaces of holomorphic functions over finite and infinite dimensional domains.
Bauer, Wolfram
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