Dissertation: “Uniform approximations by polynomials with gaps and by generalized polynomials with integral coefficients”
Dissertation: “Approximations by polynomials in complex domain , questions on unicity and location of singularities of power series”.
Topics in polynomial approximations;
Topics in approximation by analytic functions;
Geometric theory of analytic functions;
Potential theory and applications;
Analytic continuation , singularities of power series;
Pade approximations and applications;
Approximative properties of gap power series.
- Two Candidate dissertations on Approximation Theory
J.Boliai Mathematical Institut of Hungarian Academy of Sciences, Budapesht, 1982 (November)
J. Liebeg Giessen University, Germany ,1996 (December)
Trier University, Germany, 1996 - 1997 (November - January), 1999 (December), 2000 (November - December) .
All-Union sympos. on Approx.Theory in the complex domain, Ufa, USSR,1980.
Intern. Conference on Complex Analysis and Applicat., Varna, Bulgaria, 1981 .
Intern. Conference on the Theory of Approxim. of functions, Kiev, USSR, 1983.
All-Union school on the Theory of Functions , Yerevan, USSR, 1987.
Conference on the Theory of Functiona and Applica t. dedicated to the memory of Mkhitar M. Djrbashian, Yerevan, Armenia, 1995 .
Intern. Conference on Harmonic Analysis and Approximations , Nor-Amberd, Armenia, 1998.
Intern. Conference on Harmonic Analysis and Approximations. II., Nor-Amberd, Armenia, 2001.