Found 676 Documents (Results 601–676)
On a problem of B. D. Sleeman. (English) Zbl 0487.47019
Autocorrelation, equipartition of energy, and random evolutions. (English) Zbl 0485.47030
Probability measures on groups, Proc. 6th Conf., Oberwolfach 1981, Lect. Notes Math. 928, 176-182 (1982).
Conditions for two self-adjoint operators to commute or to satisfy the Weyl relation. (English) Zbl 0479.47024
Functional analysis. (Análisis funcional). Transl. from the English by Eva Sánchez Mañes. (Spanish) Zbl 0534.46001
Serie de Matemática. Madrid: Editorial Tecnos. 591 p. (1981).
Optimal control of a system governed by a self-adjoint elliptic operator with an infinite number of variables. (English) Zbl 0528.49013
Functional differential systems and related topics, Proc. 2nd int. Conf., Blazejewko/Pol. 1981, 126-133 (1981).
An approximate positive part of essentially self-adjoint pseudo- differential operators. II. (English) Zbl 0524.35101
Bounds for the linearly perturbed eigenvalue problem. (English) Zbl 0509.47011
Spectral theory of differential operators, Proc. Conf., Birmingham/ USA 1981, North-Holland Math. Stud. 55, 37-43 (1981).
Asymptotic formulas with sharp remainder estimates for eigenvalues of elliptic operators of second order. (English) Zbl 0503.35069
Spectrum and its distribution function for a transversally elliptic operator. (English) Zbl 0502.35068
On maximal dissipativeness of abstract differential operators of hyperbolic type. (Russian) Zbl 0501.47013
The spectral asymptotics of differential and pseudo-differential operators. I. (Russian) Zbl 0498.35065
A note on Olevski’s formula for self-adjoint hyperbolic equations of the second order. (English) Zbl 0497.35052
An approximate positive part of essentially self-adjoint pseudo- differential operators. I. (English) Zbl 0493.35082
Absence of singular continuous spectrum for certain self-adjoint operators. (English) Zbl 0489.47010
Analytical dependence of velocity and amplitude of a stress surface wave on the wave number. (English) Zbl 0488.73024
Useful technical devices in intermediate problems. (English) Zbl 0486.49026
Numerische Behandlung von Differentialgleichungen, Bd. 3, Tag. Clausthal 1980, ISNM 56, 36-44 (1981).
MSC:
49R50
47B25
On the boundary conditions characterizing J-sefladjoint extensions of J- symmetric operators. (English) Zbl 0483.34019
Addenda to: ”The Birman-Krein-Vishik theory of self-adjoint extensions of semibounded operators”. (English) Zbl 0476.47019
J. Oper. Theory 6, 407 (1981).
Construction of a unique self-adjoint generator for a symmetric local semigroup. (English) Zbl 0473.47023
A theory of generalized functions based on one parameter groups of unbounded self-adjoint operators. (English) Zbl 0472.46026
TH-Rep., Eindhoven 81-WSK-03, 92 p. (1981).
An approximate method for determination of eigenvalues and eigenvectors of self-adjoint operators. (English) Zbl 0468.49024
MSC:
49R50
47B25
Functional analysis. (English) Zbl 0459.46007
New Delhi etc.: Wiley Eastern Limited. XII, 376 p. £6.50 (1981).
On the spectrum and its distribution function for a transversally elliptic operator. (Russian) Zbl 0455.35095
Variational methods for one and several parameter non-linear eigenvalue problems. (English) Zbl 0423.49030
Self-adjointness of certain second order differential operators on Riemannian manifolds. (English) Zbl 0519.35075
On the sharpness of estimates of Wiman-Valiron type for solutions of evolution equations. (English. Russian original) Zbl 0499.35060
Sov. Math., Dokl. 22, 127-130 (1980); translation from Dokl. Akad. Nauk SSSR 253, 541-544 (1980).
On an analog of Plancherel’s theorem and the qualitative character of the spectrum of a self-adjoint operator. (Russian) Zbl 0481.47017
Partial differential equations: differential equations and numerical mathematics, Work Collect. Conf., Novosibirsk 1978, 205-209 (1980).
Absolutely continuous tensor products and applications to scattering theory. (English) Zbl 0459.47018
Formules de moyenne et de produit pour les resolvantes imaginaires d’opérateurs auto-adjoints. (French) Zbl 0446.47010
Mixed boundary value problems for concentric cylinders - An algebraic operator formulation. (English) Zbl 0443.35015
On the spectrum of a class of binomial operators. (English. Russian original) Zbl 0465.34016
Sov. Math., Dokl. 20, 974-977 (1979); translation from Dokl. Akad. Nauk SSSR 248, 265-268 (1979).
Self-adjoint phase operator. (English. Russian original) Zbl 0463.47025
Theor. Math. Phys. 38, 39-47 (1979); translation from Teor. Mat. Fiz. 38, 58-70 (1979).
Notes on generalized boundary value problems in Banach spaces. I: Adjoint and extension theory. (English) Zbl 0454.47024
Generalized symmetric ordinary differential expressions. I: The general theory. (English) Zbl 0451.34009
Convergence of a finite element method for the approximation of normal modes of the oceans. (English) Zbl 0431.65066
Boolean valued analysis. (English) Zbl 0427.03046
Applications of sheaves, Proc. Res. Symp., Durham 1977, Lect. Notes Math. 753, 714-731 (1979).
Analytic perturbations of self-adjoint analytic elliptic pseudodifferential operators. (English) Zbl 0423.47019
Positive self-adjoint extensions of operators affiliated with a von Neumann algebra. (English) Zbl 0414.46041
The theory of self-adjoint operators in Banach spaces with a hermitian form. (English) Zbl 0409.47024
Characterization and uniqueness of distinguished self-adjoint extensions of Dirac operators. (English) Zbl 0408.47022
Self-adjoint extensions of operators with preset asymptotic law of spectrum. (Ukrainian) Zbl 0402.47019
MSC:
47B25
A geometric proof of the spectral theorem for unbounded self-adjoint operators. (English) Zbl 0388.47011
On singular self-adjoint Sturm-Liouville operators. (English) Zbl 0412.47027
Hilbert Space Oper., Proc., Long Beach/Calif. 1977, Lect. Notes Math. 693, 109-114 (1978).
Extensions of differential-difference operators with periodic coefficients. (English) Zbl 0408.47038
A systematic method of estimating gaps in the essential spectrum of self- adjoint operators. (English) Zbl 0408.47036
Methods of modern mathematical physics. IV: Analysis of operators. (English) Zbl 0401.47001
New York - San Francisco - London: Academic Press. XV, 396 p. $ 34.00; £22.10 (1978).
On differentiation of functions of unbounded self-adjoint operators under relation bounded disturbation. (Russian) Zbl 0395.47015
On the theory of self-adjoint operators in Banach spaces with a hermitian form. (Zur Theorie der selbstadjungierten Operatoren in Banachräumen mit Hermitescher Form.) (Russian) Zbl 0394.47016
Reviewer: B. McEnnis
Real and functional analysis. (English) Zbl 0391.46001
Mathematical Concepts and Methods in Science and Engineering. Vol. 6. New York - London: Plenum Press. X, 529 p. $ 25.00 (1978).
MSC:
46-02
46B03
46B10
46C05
47H10
46A30
47B06
47B25
47A60
46E30
47A05
28-02
28A05
28A10
28A20
26A42
28A15
28C05
47-02
Buckling of cylindrical shells with small curvature. (English) Zbl 0534.73041
Dynamical systems, Proc. int. Symp., Gainesville/Fla. 1976, 449-451 (1977).
Über Erweiterungen eines beschränkten symmetrischen Operators mit Erhaltung der Schranke. (Russian) Zbl 0467.47020
On one-parameter families of extensions of a symmetric operator. (Über einparametrige Scharen von Erweiterungen eines symmetrischen Operators.) (Russian) Zbl 0148.38304
Reviewer: F. H. Vasilescu
The Kantorovich-Rubinshteĭn metric and the convergence of self-adjoint operators. (Die Kantorovich-Rubinshteĭnsche Metrik und die Konvergenz selbstadjungierter Operatoren.) (Russian. English summary) Zbl 0148.38402
Reviewer: J. Bognár
MSC:
47B25
Über eine Klasse \(J\)-selbstadjungierter Operatoren. (German) Zbl 0143.16402
Reviewer: H. Langer
MSC:
47B25
Sur les racines carrées self-adjointes d’un opérateur self-adjoint positif non borné. (French) Zbl 0061.25804
Reviewer: H. O. Cordes
MSC:
47B25
The spectral analysis of self-adjoint operators. (English) Zbl 0061.26101
Reviewer: H. O. Cordes
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