Results 11 to 20 of about 138 (121)
Investigating Predictors of Differential Trajectories of Suicidal Desire Across an Intensive Longitudinal Design. [PDF]
Suicide Life Threat BehavABSTRACT Objective To understand the evolution of suicide risk, repeated assessments of suicide‐related symptoms are necessary. Though previous studies have examined sample‐level effects, there is a dearth of research examining possible differential risk trajectories, including vulnerable subgroups, and how subgroup differences may produce distinct ...
Rogers ML, Robison M, Tran JH, Mitaj D.
europepmc +2 more sources
Tingley's problem for $p$-Schatten von Neumann classes [PDF]
Journal of Spectral Theory, 2020 Let H and H' be the complex Hilbert spaces. For p\in]1,\infty[\backslash\{2\} we ...
Fernández-Polo, Francisco J. +2 more
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Norms on complex matrices induced by complete homogeneous symmetric polynomials
Bulletin of the London Mathematical Society, Volume 54, Issue 6, Page 2078-2100, December 2022., 2022 Abstract We introduce a remarkable new family of norms on the space of n×n$n \times n$ complex matrices. These norms arise from the combinatorial properties of symmetric functions, and their construction and validation involve probability theory, partition combinatorics, and trace polynomials in non‐commuting variables.
Konrad Aguilar +3 more
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Schur multipliers in Schatten-von Neumann classes
Annals of Mathematics, 2023 To appear in Annals of Mathematics.
Conde-Alonso, José +3 more
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Exterior products of operators and superoptimal analytic approximation
Transactions of the London Mathematical Society, Volume 8, Issue 1, Page 299-412, December 2021., 2021 Abstract We give a new algorithm for the construction of the unique superoptimal analytic approximant of a given continuous matrix‐valued function on the unit circle, using exterior powers of operators in preference to spectral or Wiener–Masani factorizations.
Dimitrios Chiotis +2 more
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Schatten-von Neumann classes of integral operators
Journal de Mathématiques Pures et Appliquées, 2021 Dans ce travail, nous établissons des conditions de noyau nettes garantissant que les opérateurs intégraux correspondants appartiennent aux classes Schatten-von Neumann. Les conditions sont données en termes de propriétés spectrales des opérateurs agissant sur le noyau.
Julio Delgado, Michael Ruzhansky
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Schur multipliers of Schatten–von Neumann classes
Journal of Functional Analysis, 2020 Abstract We study in this paper properties of Schur multipliers of Schatten von Neumann classes S p . We prove that for p ≤ 1 , Schur multipliers of S p are necessarily completely bounded. We also introduce for p ≤ 1 a scale W p of tensor products of l ∞ and prove that matrices in
A.B. Aleksandrov, V.V. Peller
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Pseudo-Differential Operators and Schatten-von Neumann Classes [PDF]
, 2004 For a Hormander’s symbol classS(m g)it is proved that the weight m is in L p (ℝ2n , with 1 ⩽ p ⩽ ∞ if and only if all pseudo-differential operators with Weyl symbol inS(m g)are in the Schatten-von Neumann class Sp (L2).
BUZANO ERNESTO, NICOLA, FABIO
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Toeplitz Operators with Radial Symbols on Bergman Space and Schatten-von Neumann Classes [PDF]
Zurnal matematiceskoj fiziki, analiza, geometrii, 2020 Summary: In the present paper, we study spectral properties of Toeplitz operators with (quasi-) radial symbols on Bergman space. More precisely, the problem we are interested in is to understand when a given Toeplitz operator belongs to a Schatten-von Neumann class.
Bendaoud, Z +4 more
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A kind of multilinear operator and the Schatten—von Neumann classes
Arkiv för Matematik, 1989 The authors study a certain multilinear singular integral operator, determining its boundedness, and Schatten-von Neumann properties. The results include as special cases some proven earlier by Cohen, Hu, and Qian.
Lizhong, Peng, Tao, Qian
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