amateur 发表于 2025-3-21 19:51:51

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从容 发表于 2025-3-21 22:43:32

,Toeplitz Operators on the Segal — Bargmann Space of Infinitely Many Variables,ed in , a model for certain quantum mechanics operators. Such fundamental concepts as the creation, or annihilation operators (of a Bose gas particle at state e.) can be represented as Toeplitz operators on B., the symbols being the coordinate functions z. on .., or their complex conjugates z̄..

轻而薄 发表于 2025-3-22 01:50:05

Operator Theory: Advances and Applicationshttp://image.papertrans.cn/l/image/586362.jpg

玛瑙 发表于 2025-3-22 07:08:07

Asymptotic Properties for Positive and Toeplitz Matrices and Operators,In this paper it is presented an elementary method to obtain some asymptotic properties for certain classes of positive definite matrices and operators. This method is based, besides the Cauchy — Schwarz inequality, on the following inequality for positive operators.

expository 发表于 2025-3-22 10:26:06

,Spectral Analysis for Simply Characteristic Operators by Mourre’s Method. I,The purpose of this paper is to give a time dependent scattering theory for operators of the form p. (D) + V, where p.(D) is a convolution operator with the symbol not satisfying the condition . and V is a short range perturbation.

迅速飞过 发表于 2025-3-22 15:49:20

Operator Theory in Krein Spaces and Operator Pencils,The present paper is a detailed presentation of the results announced in .

放大 发表于 2025-3-22 18:09:13

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腼腆 发表于 2025-3-23 00:50:13

,The Krein Space (ΦH2)┴ and Coefficients of Analytic Functions,For H. = H.(U) the classical Hardy space of the unit disk and for B(z) an inner function, the Hilbert space BH. = H. ⊖ BH. is familiar to operator theorists as the basic space in the Sz.-Nagy-Foias model theory of contractions, .

FRAX-tool 发表于 2025-3-23 02:53:49

Completions and Extensions,The aim of this note is to explain the interplay between completions and extensions at its most elementary — but also generic — level.

背书 发表于 2025-3-23 08:12:26

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查看完整版本: Titlebook: Linear Operators in Function Spaces; 12th International C H. Helson,B. Sz.-Nagy,Gr. Arsene Book 1990 Birkhäuser Verlag Basel 1990 C*-algebr