×

Found 4,603 Documents (Results 3,901–4,000)

An operator-theoretic finite-difference approximation scheme for solution of exterior boundary-value problems for the Helmholtz equation. (English) Zbl 0735.65071

Direct and inverse boundary value problems, Pap. 12th Conf. Methods Techniques Math. Phys., Oberwolfach/Ger. 1989, Methoden Verfahren Math. Phys. 37, 37-55 (1991).
Reviewer: F.v.Finckenstein
PDFBibTeX XMLCite

Planar faces of operator spaces in \(L_ p\). (English) Zbl 0771.47004

Topics in matrix and operator theory, Proc. Workshop, Rotterdam/Neth. 1989, Oper. Theory, Adv. Appl. 50, 307-315 (1991).
PDFBibTeX XMLCite

An estimate of the norm of the resolvent of a quasi-Hermitean operator. (English. Russian original) Zbl 0748.47005

Sov. Math. 35, No. 1, 16-20 (1991); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1991, No. 1(344), 14-19 (1991).
Reviewer: S.Aliou Lo (Dakar)
MSC:  47A30 47A10 47B15
PDFBibTeX XMLCite

Spectral analysis of relatively finite-dimensional perturbations of spectral operators. (English. Russian original) Zbl 0759.47011

Sov. Math. 35, No. 1, 1-11 (1991); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1991, No. 1(344), 3-11 (1991).
PDFBibTeX XMLCite

Tensor norms and operator ideals. (English) Zbl 1298.46063

Martin-Peinador, Elena (ed.) et al., Contribuciones matemáticas en homenaje al profesor D. Antonio Plans Sanz de Bremond. Zaragoza: Secretariado de Publicaciones, Universidad de Zaragoza (ISBN 84-7733-158-8/pbk). 41-59 (1990).
MSC:  46M05 47L20
PDFBibTeX XMLCite

Discrete approximation of extremal problems with operator inequality constraints. (English. Russian original) Zbl 0734.90116

U.S.S.R. Comput. Math. Math. Phys. 30, No. 3, 127-132 (1990); translation from Zh. Vychisl. Mat. Mat. Fiz. 30, No. 6, 817-825 (1990).
MSC:  90C48 47A30 65K05
PDFBibTeX XMLCite
Full Text: DOI

Estimates in operator classes for a difference of functions, from the Pick class, of accretive operators. (English. Russian original) Zbl 0728.47011

Funct. Anal. Appl. 24, No. 3, 187-195 (1990); translation from Funkts. Anal. Prilozh. 24, No. 3, 26-35 (1990).
PDFBibTeX XMLCite
Full Text: DOI

Measure convergence in regular noncommutative symmetric spaces. (English. Russian original) Zbl 0718.46043

Sov. Math. 34, No. 9, 78-87 (1990); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1990, No. 9(340), 63-70 (1990).
PDFBibTeX XMLCite

Estimates for the difference of fractional powers of selfadjoint operators in the case of unbounded perturbations. (English. Russian original) Zbl 0784.47011

J. Sov. Math. 61, No. 2, 2018-2035 (1992); translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 178, 120-145 (1989).
PDFBibTeX XMLCite
Full Text: DOI

Filter Results by …

Document Type

Database

all top 5

Author

all top 5

Serial

all top 5

Year of Publication

all top 3

Main Field

Biographic Reference

all top 3

Software