Education

• 1978: PhD from Institute of Mathematics, Moscow, Russia
• 1998: Dr. rer.nat, Sofia-University, Bulgaria
• 2001: Full Professor at IMI and at Math. Dept, Technical University-Sofia, Bulgaria

Fields of interest

Mathematical Analysis: Classical Complex Analysis, Potential Theory, Functional Analysis, Numerical Methods

Research projects

• 1992: DAAD-Stipendium Katholische Universität, Eichstätt, Deutschland
• 1990–1997: Research project at National Science Foundation, Bulgaria
• 1998-1999: Joint research project at Polish Academy of Sciences, Lodz, Poland
• 1998–2001:Joint project at DFG, Katholische Universität, Eichstätt, Germany
• 2005-2006: Joint research project with MIAN “Steklov”, Moscow, Russian

Selected Publications

• "Rational functions of best Lp - approximation and and analytic continuability", with J Lawrynowicz, Results of Mathematics, 2003
• "Poles and alternation points in rational Chebyshev approximation", with H.-P. Blatt and R. Grothmann; CMFT (Constructive Methods of Functional Theory) 3, 2004, 165 - 177; Special Volume dedicated to Prof. Gaier.
• "Domains of uniform convergence of real Chebyshev rational approximants", Analysis 25(2005), 159-169.
• "Sign changes in rational L(1) approximation", Ukranian Mat. Zh. 58(2006), no 2, 283-287, Translation in English: Ukranian Math. Journal, 58(2006), no2, 318-323.
• "Ostrowski gaps, zeros and overconvergence", Bulletin de la Societe des Sciences et de Lettres de Lodz, Vol. XLV1, 2006, Vol.L,pp.53-70.