排序方式: 共有68条查询结果,搜索用时 875 毫秒
1.
A Volterra type integral equation in a Hilbert space with an additional linear operator L and a spectral parameter depending
on time is considered. If the parameter does not belong to the spectrum of L unconditional solvability of the considered problem
is proved. In the case where the initial value of the parameter coincides with some isolated point of the spectrum of the
operator L sufficient conditions for solvability are established. The obtained results are applied to the partial integral
equations associated with a contact problem of the theory of elasticity. 相似文献
2.
Sh. A. Ayupov 《Functional Analysis and Its Applications》2002,36(2):145-147
In this note we describe (up to isomorphism) the real von Neiman algebras R with Abelian skew-symmetric part
, i.e., such that xy-yx=0 for any
. 相似文献
3.
Sh. A. Ayupov 《Functional Analysis and Its Applications》2004,38(4):302-304
Let R be a real AW
*-algebra, and suppose that its complexification M = R + iR is also a (complex) AW
*-algebra. We prove that R is of type I if and only if so is M.Translated from Funktsionalnyi Analiz i Ego Prilozheniya, Vol. 38, No. 4, pp. 79–81, 2004Original Russian Text Copyright © by Sh. A. Ayupov 相似文献
4.
Shavkat Ayupov Karimbergen Kudaybergenov Berdakh Nurjanov Amir Alauadinov 《Mathematica Slovaca》2014,64(2):423-432
The paper is devoted to so-called local and 2-local derivations on the noncommutative Arens algebra L ω(M,τ) associated with a von Neumann algebra M and a faithful normal semi-finite trace τ. We prove that every 2-local derivation on L ω(M,τ) is a spatial derivation, and if M is a finite von Neumann algebra, then each local derivation on L ω(M,τ) is also a spatial derivation and every 2-local derivation on M is in fact an inner derivation. 相似文献
5.
Sh. A. Ayupov 《Journal of Mathematical Sciences》1987,37(6):1422-1448
A survey of recent results in classification of JW-algebras (weakly closed Jordan algebras of self-adjoint operators in the Hilbert space) is given along with connections of JW-algebras with their enveloping W*-algebras. It is shown how these results are applied in the proofs of analogs of many important results in the theory of W*-algebras.Translated from Itogi Nauki i Tekhniki, Seriya Sovremennye Problemy Matematiki (Noveishie Dostizheniya), Vol. 27, pp. 67–98, 1985. 相似文献
6.
B. M. Ayupov V. V. Atuchin T. I. Grigor’eva L. D. Pokrovskii M. S. Lebedev 《Russian Physics Journal》2006,49(5):468-474
Polycrystalline rutile films are synthesized on fused quartz substrates by the method of thermal oxidation of a titanium metal
layer in air at 800°C. The optical parameters of the TiO
2 films are determined for a wavelength of λ = 0.6328 μm by the method of laser zero ellipsometry.
__________
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp. 15–20, May, 2006. 相似文献
7.
8.
9.
10.