Rotator-Cuff
发表于 2025-3-28 17:04:57
,Some interpolation problems of Nevanlinna-Pick type. The Kreĭn-Langer method,The method of M.G. Kreĭnn and H. Langer to solve interpolation problems of Nevanlinna-Pick type is explored. The classical Nevanlinna-Pick problem and a version involving derivatives are treated. The data give rise to an indefinite inner product space and a symmetric operator in it. In general, the inner product space is degenerate.
外形
发表于 2025-3-28 22:45:03
,Some characteristics of a linear manifold in a Kreĭn space and their applications,We introduce two characteristics ε±(.) of a linear manifold . in a Kreĭn space and give two applications, one in the geometry of Kreĭnn spaces and the other one in the theory of operators in these spaces.
紧张过度
发表于 2025-3-29 02:32:27
,Riggings and relatively form bounded perturbations of nonnegative operators in Kreĭn spaces,For nonnegative operators in Kreĭnn spaces we give conditions for the preservation of the nonemptiness of the resolvent set and the preservation of the regularity of critical points under relatively form bounded perturbations.
MURKY
发表于 2025-3-29 05:27:15
Norm bounds for Volterra integral operators and time-varying linear systems with finite horizon,Norm bounds are given for Volterra integral operators that appear as input-output operators of finite-dimensional time-varying linear systems on a finite interval. As an application a known result on state feedback ..-control for such systems is derived.
急急忙忙
发表于 2025-3-29 08:47:16
Spectral properties of a matrix polynomial connected with a component of its numerical range,We prove that any bounded component of the numerical range of a matrix polynomial .(λ) contains at least one eigenvalue of .(λ). Moreover, the set of corresponding Jordan chains is complete.
观点
发表于 2025-3-29 14:08:00
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消息灵通
发表于 2025-3-29 18:10:29
On the number of negative squares of certain functions,The aim of the present paper is to compute the number of negative squares of certain functions, especially of some polynomials of several variables.
收藏品
发表于 2025-3-29 21:26:53
Operator Theory: Advances and Applicationshttp://image.papertrans.cn/c/image/237201.jpg
改良
发表于 2025-3-30 00:37:28
https://doi.org/10.1007/978-3-0348-8812-7Finite; Operator theory; differential equation; equation; partial differential equation
吹牛需要艺术
发表于 2025-3-30 04:12:53
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