An abstract version of the resonance theorem
Displaying 21 – 40 of 280
An Lp Estimate for the Difference of Derivatives of Spectral Expansions Arising by One-dimensional Schroedinger Operators
Nebojša L. Lažetić, Olivera R. Đorđević (2002)
Matematički Vesnik
Application of sequential shifts to an interpolation problem.
Zbigniew Binderman (1993)
Collectanea Mathematica
In the present paper initial operators for a right invertible operator, which are induced by sequential shifts and have the property c(R) are constructed. An application to the Lagrange type interpolation problem is given. Moreover, an example with the Pommiez operator is studied.
Approximate solutions and error bounds for second order operator differential equations
Rubio, G., Jódar, L. (1991)
Portugaliae mathematica
Aufspaltungen linearer gewöhnlicher Differentialoperatoren und der zugehörigen Greenschen Funktion.
Ulrich Trottenberg (1975)
Manuscripta mathematica
Averaging in an ordinary differential equation.
А.Г. Колпаков (1983)
Sibirskij matematiceskij zurnal
Bargmann-type inequality for half-linear differential operators.
Bognár, Gabriella, Došlý, Ondřej (2009)
Journal of Inequalities and Applications [electronic only]
Bergman spaces on some tube-type domains and Laguerre operators on symmetric cones.
Fulvio Ricci, Anita Tabacco Vignati (1994)
Journal für die reine und angewandte Mathematik
Boundary conditions for one-dimensional positive semigroups.
M.G. Ulmet (1992)
Semigroup forum
Boundary value problem for second-order differential operators with mixed nonlocal boundary conditions.
Denche, M., Kourta, A. (2004)
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Boundary value problems and controllability of linear systems with right invertible operators [Book]
Nguyen Van Mau (1992)
Boundary-value problems for second-order differential operators with nonlocal boundary conditions.
Denche, Mohamed, Meziani, Abderrahmane (2007)
Electronic Journal of Differential Equations (EJDE) [electronic only]
C*-Algebras of Singular Integral operators on the line realted to singular Sturm-Liouville problems.
Houshang H. Sohrab (1983)
Manuscripta mathematica
Compactness in certain abstract function spaces with application to differential inclusions
N. U. Ahmed (1995)
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
In this note we present a result on compactness in certain Banach spaces of vector valued functions. We demonstrate an application of this result to the questions of existence of solutions of nonlinear differential inclusions on a Banach space.
Compactness of the inverse of the minimal operator for a class of ordinary differential expressions.
Robert M. Kauffman (1972)
Journal für die reine und angewandte Mathematik
Completeness of elementary solutions of second order elliptic equations in a semi-infinite tube domain.
Yakubov, Yakov (2002)
Electronic Journal of Differential Equations (EJDE) [electronic only]
Das Randwertproblem für eine Klasse singulärer gewöhnlicher Differentialausdrücke.
Frank Natterer (1975)
Aequationes mathematicae
Das Randwertproblem für eine Klasse singulärer gewöhnlicher Differentialausdrücke. (Short Communication).
Frank Natterer (1974)
Aequationes mathematicae
Decomposition conditions for two-point boundary value problems.
Feng, Wenying (2000)
International Journal of Mathematics and Mathematical Sciences
Degenerate evolution problems and Beta-type operators
Antonio Attalienti, Michele Campiti (2000)
Studia Mathematica
The present paper is concerned with the study of the differential operator Au(x):=α(x)u”(x)+β(x)u’(x) in the space C([0,1)] and of its adjoint Bv(x):=((αv)’(x)-β(x)v(x))’ in the space , where α(x):=x(1-x)/2 (0≤x≤1). A careful analysis of their main properties is carried out in view of some generation results available in [6, 12, 20] and [25]. In addition, we introduce and study two different kinds of Beta-type operators as a generalization of similar operators defined in [18]. Among the corresponding...