## Found 100 Documents (Results 1–100)

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### Spectral properties of non-selfadjoint Sturm-Liouville operator equation on the real axis.(English)Zbl 1484.47073

MSC:  47E05 34L20 47B28
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### Perturbations of Gibbs semigroups and the non-selfadjoint harmonic oscillator.(English)Zbl 07155090

MSC:  47D06 81Q12 81Q15
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### A note on the matrix Sturm-Liouville operators with principal functions.(English)Zbl 1430.34033

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MSC:  34L05 34B24 34L15
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### The study of solutions of a class of nonlinear systems.(Russian. English summary)Zbl 1363.47019

MSC:  47A48 47N20

### On integration of one class of systems of Lax-type equations.(English)Zbl 1326.47109

MSC:  47N20 47A48 34G20
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### Principal functions of non-selfadjoint matrix Sturm-Liouville operators with boundary conditions dependent on the spectral parameter.(English)Zbl 1336.34044

MSC:  34B24 34L15 34L05
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### Estimates on complex eigenvalues for Dirac operators on the half-line.(English)Zbl 1293.81020

MSC:  81Q12 34L40
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MSC:  35P20
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### Schatten-von Neumann estimates for resolvent differences of Robin Laplacians on a half-space.(English)Zbl 1287.47038

Arendt, Wolfgang (ed.) et al., Spectral theory, mathematical system theory, evolution equations, differential and difference equations. Selected papers of 21st international workshop on operator theory and applications, IWOTA10, Berlin, Germany, July 12–16, 2010. Basel: Birkhäuser (ISBN 978-3-0348-0296-3/hbk; 978-3-0348-0297-0/ebook). Operator Theory: Advances and Applications 221, 453-468 (2012).
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### Laplacian eigenstructure of the equilateral triangle.(English)Zbl 1319.35116

Ruse: Hikari Ltd. (ISBN 978-954-91999-6-3/pbk). x, 200 p. (2011).
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### Estimates for resolvents and functions of operator pencils on tensor products of Hilbert spaces.(English)Zbl 1227.47008

MSC:  47A80 47E05 34L15
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### The method of similar operators in the spectral analysis of non-self-adjoint Dirac operators with non-smooth potentials.(English. Russian original)Zbl 1219.47024

Izv. Math. 75, No. 3, 445-469 (2011); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 2011, No. 3, 3-28 (2011).
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### Completeness of the root vector systems of some non-selfadjoint operators.(Ukrainian. English summary)Zbl 1223.47047

MSC:  47E05 34L40

### On a class of nonselfadjoint periodic boundary value problems with discrete real spectrum.(English)Zbl 1259.47060

Levitin, Michael (ed.) et al., Operator theory and its applications. In memory of V. B. Lidskiĭ (1924–2008). Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-5272-9/hbk). Translations. Series 2. American Mathematical Society 231; Advances in the Mathematical Sciences 65, 59-66 (2010).
MSC:  47E05 34B24 76R99
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### Almost sure Weyl asymptotics for non-self-adjoint elliptic operators on compact manifolds.(English)Zbl 1228.47046

MSC:  47F05 35P20 58J05
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### Completeness of the root vector system of the two-terms non-selfadjoint differential operators of an even order with periodic distribution potentials.(English)Zbl 1221.47084

MSC:  47E05 34L40

### Basis property in $$L_p(0,1)$$ of the root functions corresponding to a boundary-value problem.(English)Zbl 1205.34112

MSC:  34L10 34B24 47E05

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### A functional model, eigenvalues, and finite singular critical points for indefinite Sturm-Liouville operators.(English)Zbl 1206.47040

Ball, Joseph A. (ed.) et al., Topics in operator theory. Volume 2: Systems and mathematical physics. Proceedings of the 19th international workshop on operator theory and applications (IWOTA), College of William and Mary, Williamsburg, VA, USA, July 22–26, 2008. A tribute to Israel Gohberg on the occasion of his 80th birthday. Basel: Birkhäuser (ISBN 978-3-0346-0160-3/hbk; 978-3-0346-0163-4/set; 978-3-0346-0161-0/ebook). Operator Theory: Advances and Applications 203, 247-287 (2010).
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### Spectral properties of degenerate non-selfadjoint elliptic differential operators under Dirichlet boundary conditions.(English)Zbl 1194.47053

MSC:  47F05 35P15
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### On the completeness and some spectral properties of degenerate non-selfadjoint elliptic differential operators.(English)Zbl 1201.47045

MSC:  47F05 35P05 35J15
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### On the eigenvalues of a non-selfadjoint second order difference operator.(English)Zbl 1172.39027

Bohner, Martin (ed.) et al., Difference equations and applications. Proceedings of the fourteenth international conference on difference equations and applications (ICDEA), Istanbul, Turkey, July 21–25, 2008. Istanbul: Bahçeşehir University Press (ISBN 978-975-6437-80-3/pbk). 179-186 (2009).
MSC:  39A70 39A12 34L05

### On stability of an inverse spectral problem for a nonsymmetric differential operator.(English)Zbl 1173.34003

MSC:  34A55 34L40 47E05
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### On Dirichlet-to-Neumann maps and some applications to modified Fredholm determinants.(English)Zbl 1169.47014

Janas, Jan (ed.) et al., Methods of spectral analysis in mathematical physics. Conference on operator theory, analysis and mathematical physics (OTAMP), Lund, Sweden, June 15–22, 2006. Basel: Birkhäuser (ISBN 978-3-7643-8754-9/hbk). Operator Theory: Advances and Applications 186, 191-215 (2009).
Reviewer: Josef Wloka (Kiel)
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### Spectral analysis of family of singular non-self-adjoint differential operators of even order.(English)Zbl 1132.47036

MSC:  47E05 34L10
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### Multi-dimensional versions of a determinant formula due to Jost and Pais.(English)Zbl 1207.47043

MSC:  47G10 34B27 47B10
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### Absence of the absolutely continuous spectrum of a first-order non-selfadjoint Dirac-like system for slowly decaying perturbations.(English)Zbl 1169.34058

MSC:  34L40 47E05
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### Spectrum and pseudospectrum of non-self-adjoint Schrödinger operators with periodic coefficients.(English. Russian original)Zbl 1128.47042

Math. Notes 80, No. 3, 345-354 (2006); translation from Mat. Zametki 80, No. 3, 456-466 (2006).
MSC:  47E05 34L40 47A10
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### Spectral distribution for a class of infinite dimensional Hamiltonian operators.(Chinese. English summary)Zbl 1097.47510

MSC:  47B50 47A10 47N20 35L05 37K05

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### Asymptotic and spectral properties of operator-valued functions generated by aircraft wing model.(English)Zbl 1128.74312

MSC:  74G25 47G20 34K10 34L99 45J05 47N20
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### On the spectral properties of degenerate non-selfadjoint elliptic systems of differential operators.(English)Zbl 1076.47034

MSC:  47F05 47A10

### The spectrum of the damped wave operator for a bounded domain in $$\mathbb R^2$$.(English)Zbl 1061.35064

MSC:  35P20 58J45 35B37 93C20 34L25 49J20
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### Spectral properties of non-selfadjoint difference operators.(English)Zbl 0992.39018

Reviewer: Pavel Rehak (Brno)
MSC:  39A70 39A12 34L05
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### Nonselfadjoint spectral operators and their application to control theory.(English)Zbl 0977.47025

Corduneanu, C. (ed.) et al., Volterra equations and applications. Proceedings of the Volterra centennial symposium, University of Texas, Arlington, TX, USA, May 23-25, 1996. London: Gordon and Breach Science Publishers. Stab. Control Theory Methods Appl. 10, 457-463 (2000).
MSC:  47B40 47A10 93B60

### Perturbation of the spectrum and wave operators in linear transport theory.(English. Russian original)Zbl 0977.35100

Russ. Math. Surv. 54, No. 5, 1049-1050 (1999); translation from Usp. Mat. Nauk 54, No. 5, 175-176 (1999).
MSC:  35P05 82C70 47A40 47N55
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### Isomorphisms of $$\text{Alg } {\mathcal L}_{2n + 1 (i,k)}$$.(English)Zbl 0961.47042

MSC:  47L35 34C10

### Asymptotics of spectrum and eigenfunctions for nonselfadjoint operators generated by radial nonhomogeneous damped wave equations.(English)Zbl 0938.35113

MSC:  35P20 35L05 47F05

### On the spectral properties of generalized non self-adjoint elliptic systems of differential operators degenerated on the boundary of domain.(English)Zbl 0928.47036

MSC:  47F05 35J40

### Spectral theory of guided waves. Transl. from the Russian.(English)Zbl 0880.35121

Bristol: Institute of Physics Publishing. xix, 310 p. £100.00; \$ 200.00 (1996).
MSC:  35Q72 35P05 35-02 78-02 74-02 47A10 47A75

### On a boundary value problem for the Schrödinger operator with complex potential.(English. Russian original)Zbl 0874.34073

Differ. Equations 32, No. 1, 140-142 (1996); translation from Differ. Uravn. 32, No. 1, 133-134 (1996).
MSC:  34L40 46B15

### The discrete eigenvalues for a class of integro-differential operators.(Chinese. English summary)Zbl 0890.45001

MSC:  45C05 45K05

### On the order of almost everywhere equiconvergence of Riesz means of non- self-adjoint extensions of the Laplace operator.(Russian. English summary)Zbl 0755.35077

MSC:  35P05 47F05 35J05
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### An inverse problem for a class of one-dimensional Schrödinger operators with a complex periodic potential.(English. Russian original)Zbl 0739.34022

Math. USSR, Izv. 37, No. 3, 611-629 (1991); translation from Izv. Akad. Nauk SSSR, Ser. Mat. 54, No. 6, 1252-1269 (1990).
MSC:  34A55 34L40 34B24
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### An inverse problem for a class of one-dimensional Schrödinger operators with complex periodic potential.(Russian)Zbl 0718.34015

MSC:  34A55 34L40 34B24

### On the spectrum and resolvent of non-selfadjoint multichannel systems with non-zero inner energies.(Russian)Zbl 0756.34081

Linear operators and their applications, Themat. Collect. Sci. Works, Baku, 26-31 (1989).
MSC:  34L05 34L30 34B15

### On completeness of the system of root subspaces of a higher order non- selfadjoint operator of the Schrödinger type.(Russian)Zbl 0792.47019

Gol’tser, Ya. M. (ed.), Studies on differential equations and their applications. Alma-Ata: Kazakhskij Pedagogicheskij Institut Im. Abaya, 22-26 (1989).
MSC:  47A70 47B25 47F05

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### Characteristic function and description of accretive and sectorial boundary problems for ordinary differential operators.(Russian. English summary)Zbl 0591.47035

Reviewer: V.Angelov
MSC:  47E05 47B44 34L99

### Spectral theory of non self-adjoint operator-functions with a continuous part of the spectrum.(Russian)Zbl 0626.47046

Spektr. Teor. Oper. 5, 42-68 (1984).
Reviewer: J.Appell
MSC:  47E05 47A70 34L99

### On the spectrum of the not self-conjugate Dirac system.(Russian)Zbl 0604.47010

Reviewer: St.Frunză
MSC:  47A70 47A10 47E05

### Development of functional analysis at the Institute of Mathematics of the Academy of Science of the Ukrainian SSSR.(Russian)Zbl 0577.46002

Reviewer: S.Dierolf
MSC:  46-03 47-03 01A60

### Projection methods in non-selfadjoint problems of mathematical physics.(Russian)Zbl 0569.65089

Current problems of mathematical physics and of numerical mathematics, Collect. Artic., Moskva 1982, 156-161 (1982).
Reviewer: V.Korneev
MSC:  65Z05 65N30 35Q99

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### Non-self-adjoint Zakharov-Shabat operator with a potential of the finite asymptotic values. I: Direct spectral and scattering problems.(English)Zbl 0486.35064

MSC:  35P25 35Q99
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### On multiple expansion in eigenfunctions, taking account of spectral singularities.(English. Russian original)Zbl 0484.34016

Sov. Math., Dokl. 24, 74-77 (1981); translation from Dokl. Akad. Nauk SSSR 259, 287-289 (1981).
MSC:  34L99

### Eigenfunction expansion of non self-adjoint operators.(English)Zbl 0544.47017

Reviewer: A.Torgašev

### Multiple expansion in eigenfunctions of a one-dimensional nonselfadjoint differential operator of even order on the half-axis.(Russian)Zbl 0544.47016

Spectral theory of operators, 3, Collect. Artic., Baku 1980, 33-101 (1980).
Reviewer: A.Torgašev
MSC:  47A70 47E05 47A10

### Expansion into eigenfunctions of a boundary problem, generated by a non-selfadjoint singular differential operator of the second order and the boundary condition depending on $$\lambda$$.(Russian)Zbl 0197.41501

Vopr. Mat. Fiz. Teor. Funkts. 1, 97-117 (1964).
MSC:  34L10 34L05 47E05

### On the spectrum of non-selfadjoint differential operators.(English. Russian original)Zbl 0144.38801

Sov. Math., Dokl. 5, 1158-1162 (1964); translation from Dokl. Akad. Nauk SSSR 158, 29-32 (1964).
Reviewer: J. B. McLeod
MSC:  47-XX

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