Aly Abd El Rahman El Sabbagh|Publications

Benha University

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Prof. Aly Abd El Rahman El Sabbagh :: Publications:

Research Fields

Hilbert Space

symmetric relations

Shams University Engineering

University Engineering Bulletin

canonical systems

Extensions

Symmetric Operato

Number of publications is 33

Title

1-"On the Positive Function of Bounded Type in Hilbert Space".Anallele Stinifice ale UniverstatII AL I Cuza Din 2007T2

2-On the Spectrum of the symmetric relations for the canonical systems of Differential Equations in Hilbert space-11, Research Reports Helsinki University of Technology HUT .

3-On the Generalized Resolvent for the symmetric relation in Hilbert space,Research Reports Helsinki University of Technology HUT

4-On the Existence of the Selfadjoint Extension of the Symmetric Relation in Hilbert Space, Research Reports Helsinki University of Technology HUT

5-On the Parametric Spline Method for a class of non- linear Singular Boundary Value Problems Arising in Physiology, Research Reports Helsinki University of Technology HUT.

6-On the Parametric Spline Method for a class of non- linear Singular Boundary Value Problems, Research Reports Helsinki University of Technology HUT

7-On the Spectrum of the symmetric relations for the canonical systems of Differential Equations in Hilbert space-1, (Jordan)Conference 527/12/2004, Applied Scientific Private University.

8-"On the Development of the Extensions Theorem of Symmetric Relations in Hilbert Space". Hadronic Press INC. U.S.A. (Vol.20, 345–352).

9-On the Characteristic Functions Of Reproducing Kernels in Hilbert Space". Accepted in (IJMAA).U.S.A.

10-On the Solution of the Interpolation Problem Via Schur Class,(II).Ain Shams University Engineering Bulletin .Egypt

11-On the Spectrum of the Symmetric Relations for the Canonical Systems of Differential Equations in Hilbert Space Ain Shams University Engineering Bulletin . Egypt

12-On Jr– Contractive Function of Closed Symmetric Operator in Hilbert Space,(I).Ain Shams University Engineering Bulletin .Egypt

13-"On the Spectrum of the Symmetric Relations for the Canonical Systems of Differential Equations in Hilbert Space".-1 Accepted in Kluwer Academic Publishers Nederland.

14-"On J–Contractive Function of bounded type associated Hilbert Space (II)" . Accepted in ICCAM – (Belgium).

15-"On the Expansion Theorem Described by H(A,B)-I". Ain Shams Uni. Scientific Bulletin, (Vol.37,No1).

16-"On the Solution of the Interpolation Problem Via Schur Class,(II)". Ain Shams Uni., Scientific Bulletin (Vol 37,No1).

17-"On JR– Contractive Function of Closed Symmetric Operator in Hilbert Space,(I)". Ain Shams Uni., Scientific Bulletin (VoL.37/4 ).

18-On the Expansion Theorem Described by H(A,B) .

19-On Boundary Value Problems of Extensions of Symmetric Operators.

20-On the Positive Function of Bounded type in Hilbert Space.

21-"On Boundary Value Problems of Extensions of Symmetric Operators". Conference in IASI– Romania 26/8/2001 to 31/8/2001

22-On the Characteristic Functions Of Reproducing Kernels in Hilbert Space .

23-On the Solution of Nevanlinna pick problem with selfadjoint extentions of symmetric linear relation in Hilbert space. (IJMMS U.S.A).

24-On The Matrix and Resolvent Solutions of Nevanlinna Pick Problem with Selfadj . Extension. Ain Shams University Engineering Bulletin .Egypt Received Aug . 31.1996 – Accepted : Nov .2

25-A family of Straus Extensions Described by Boundary Conditions Involving Matrix Functions.Ain Shams University Engineering Bulletin .Egypt

26-On Regular Canonical Systems of Differential Expressions With Wely Coefficient Associated With Generalized Resolvents ( ICPAM ).

27-On Manifestations of Nevanlinna function in Hilbert Space.Ain Shams University Engineering Bulletin .Egypt

28-On Characteristic Function of a Given Symmetric Relation Related to The Extension Problem of Hamiltonian System.Ain Shams University Engineering Bulletin .Egypt

29- Selfadjoint Extensions of Regular Canonical Systems With Stieltjes Boundary Conditions. (JMAA).

30-On Selfadjoint Extensions of Densely Defined Symmetric Operators Associated With Regular Canonical Systems. Ain Shams University Engineering Bulletin. Published: Vol. 25, No. 3

31-On The Weyl Coefficient For a Canonical System of The First Order Differential Equations.Ain Shams University Engineering Bulletin.Published: Vol. 25, No. 3

32-On some representations of the Nevanlinna function in Hilbert Space, under preparation

33-On the Basic of Operator valued Meromorphic functions, Under Preparation

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