Ερευνητικές Εργασίες

I. Δημοσιευμένες Εργασίες

•  A definition of numerical range of rectangular matrices (with  C. Chorianopoulos and P. Psarrakos) J. Linear and
  Multilinear Algebra, Vol. 57, (5), (2009), 459-475.

•  Factorizations of EP Operators ( with D. Drivaliaris and D. Pappas) J. Linear Algebra and Applications, 429 (2008), 1555-1567

• Generalized inverses and Special type Operator algebras (with D. Pappas) J. Facta Univ. Series Math. Inform. 21 (2006), 41-48 (Reviewer :  Catalin Badea) (PDF)

•  Approximability of the Generalized Inverse of an Operator (with D. Pappas) Journal  Inst. Math. & Comp. Sci, Vol 19 , No 1, (2006), 73-77 (PDF)

•  On the nest algebra-module factorizations. Far East J. Math. Sci. (FJMS) 2 (2000) no. 6, 973-978.   47A68 (47A46 47L99)  MR18088709(2001m:47033) (Reviewer :  Jun  Zhu) (PDF)

•   On the minimal polynomial of an algebraic operator. (with J. Maroulas) Algebras Groups Geom. 16 (1999)  no. 2,  195-201. 47A05 (47N70 93B05). MR1700253 (2000f:47005)  (Reviewer : D.Przeworska-Rolewicz) (PDF)

•  Factorizations with respect to a commutative subspace lattice. Math. Japon. 47 (1998), no. 2, 209-216.  47A68 (47D25). MR1615093 (98m :47021) (Reviewer : Alan P. Donsing) (PDF)

•  Partial isometries and extreme points of certain operator algebras. Algebras Groups Geom.  13, (1996), no 4,  489-497.  47D25 (47C05) MR1425252 (97m:47059) (Reviewer : Alan  Hopenwasser) (PDF)

•    Full operators on reflexive Banach space. Bull Greek Math. Soc.  36  (1994), 81-86. 47A05 (47A15) MR1637627 (99f: 47003) (PDF)

•   The module factorization of operators on Hilbert space. J. Math. Anal. Appl. 142 (1989), no. 1,  95-100.  47A68 (47A15) MR1011412 (91b : 47036) (Reviewer: Steve Wright) (PDF)

•   Nest space decomposition for an operator in C_w. Bull Soc. Math. Gr. (N.S.)  29 (1988), 99-102.  47D25 (47A15 47A45 47C05) MR1039434 (91h: 47044) (Reviewer: David Larson) (PDF)

•   Triangular integration with respect to a nest algebra module. Indiana Univ. Math. J. 34 (1985) no. 2, 299-317. 47D25 (46L99 47A15 47B99) MR0783917 (86h : 47073). (Reviewer: David Larson) (PDF)

•   Full operators and approximation of inverses. J. London Math. Soc. (2)  30 (1984), no 2, 295-304.   47D30 (47A12 47C05) MR0771425 (86d : 47060).  (Reviewer: Kenneth R. Davidson) (PDF)

•   On certain commuting families of rank one operators. Proc. Edinburgh Math. Soc. (2) 27 (1984), no. 2,  115-129.    47B05 (47A65 47D25) MR0760607 (86m : 47021). (Reviewer : Alan  Hopenwasser) (PDF)

•   Perturbation of a nest algebra module. Math. Proc. Cambridge Philos. Soc. 93 (1983), no. 2, 303-306.  47D25 MR0675712 (85a : 47048). (Reviewer: Christopher Lance)            (PDF)

•   Contributions to non-selfadjoint operator algebras Ph.D. King's College, University of London, 1981

II. Υποβληθείσες για δημοσίευση

III. Υπό προετοιμασία

•   Polynomial Aproximation of the Moore-Penrose inverse  (with D. Drivaliaris and D. Pappas)
•  Characterizations of EP Operators  (with D. Drivaliaris )

IV. Συνέδρια - Πρακτικά

•   d01. 7th Balkan Conference in Mathematics, EME, Greece, December 1983.
•  d02. Conference in "Operators and Function Theory, Lancaster", UK ,July 1984
•  d17.  Factorization along nest algebra module, International Conference in "Operator Theory", Greece, Athens, 1985
•  d18. Partial isometries and extreme points of certain operator algebras, Proceedings of the "1rst Panellenic Conference in Mathematical Analysis", Greece,  Thessaloniki, 1991
•  d03. "2nd Panellenic Conference in Mathematical Analysis", Greece, Athens, 1992
•  d19. Factorizations with respect to a commutative subspace lattice,  Proceedings of the "4th Panellenic Conference in Mathematical Analysis", Greece, Patra,  1994
•  d20. Some applications of full operators on reflexive Banach spaces, Proceedings of the Conference "Applied Analysis" Greece, Samos, 1996
•  d21. Some extreme points of certain operators algebras, Proceedings of the "Aegean Conference on operator algebras and applications" Greece, Samos, 1996
•  d22. The minimal polynomial of an algebraic operator, Proceedings of the "5th Panellenic Conference in Mathematical Analysis", Greece, Crete 1996
•  d23. Triangular integrals and factorizations of operators, Proceedings of the "6th Panellenic Conference in Mathematical Analysis", Greece, Samos 1997
•  d24. Numerical ranges of operators and weak approximation of inverses (with D. Pappas),  Proceedings of the "9th Panellenic Conference in Mathematical Analysis", Greece, Hania  2002
•  d25. Approximation of generalized inverses of  normal operators (with D. Pappas), Proceedings of the "10th Panellenic Conference in Mathematical Analysis", Greece, Athens  2004
•  d26. EP operators and generalized inverses (with D. Drivaliaris and D. Pappas), Proceedings of the "11th Panellenic Conference in Mathematical Analysis", Greece, Thessaloniki  2006
•  d27. EP operators and approximation of generalized inverses (with D. Drivaliaris and D. Pappas), Proceedings of the 3rd International Conference of Applied Mathematics, Plovdiv, Bulgaria, August 2006
•  d28.Polynomial approximation of the Moore{Penrose inverse of an operator (with D. Drivaliaris and D. Pappas), Proceedings of the  Conference in Mathematical Analysis and its Applications. Nis, Serbia, June 2009 (Κεντρική Ομιλία 40΄)