Professor of Mathematics, University of Plovdiv, Paisii Hilendarski, Faculty of Mathematics and Informatics, Department of Mathematical Analysis, Plovdiv, Bulgaria. •    Doctor of Sciences in Mathematics (Mathematical Modeling and Applications of Mathematics), University of Plovdiv Paisii Hilendarski, 2016. Thesis: Analytical, statistical, and intelligent modeling methods. •    Professor in Mathematics, University of Plovdiv Paisii Hilendarski, 2011. •    Associate Professor in Computational Mathematics, 1985. •    Ph.D. in Physics and Mathematics, with a specialty in Computational Mathematics, 1981, Tarasс Shevchenko State University of Kiev, Ukraine; Faculty of Cybernetics, 1976–1980. Thesis: Higher order accuracy finite difference schemes on infinite domains. Scientific advisor: Academician of the Ukrainian Academy of Sciences, Prof. D.Sc. Vladimir Leonidovich Makarov. •    M.Sc. and B.Sc. in Computational Mathematics, 1973. St. Climent Ohridski University of Sofia, Bulgaria (1968–1973). Faculty of Mathematics and Mechanics. Thesis: Numerical methods in the theory of elasticity. Advisor: Prof. D.Sc. Stefka Nikolaeva Dimova.