On Professor Ivan Dimovski Contributions

This special issue of the journal JIASF is dedicated to Professor Ivan Dimovski, Member of Editorial Board, and his contributions in mathematical analysis and its applications. The basic, widely World known and explored of them, can be classified in the following topics: operational calculus, integral transforms, theory of multipliers of convolutional algebras, expansions in eigenfunctions and associated functions, explicit characterization of commutants and automorphisms in them, linear nonlocal boundary value problems for differential equations of mathematical physics. Shortly, he is known as the father of the Convolutional Calculus, as extension of the Mikusinski operational calculus. Besides, he has important role in Bulgarian mathematics, by creating a school of disciples, contribution to education in mathematics both in secondary schools and universities, translating many books and works from foreign languages into Bulgarian and vice versa. 1. Short biographical data Professor Dr.Sc. Ivan Dimovski, Institute of Mathematics and Informatics Bulgarian Academy of Sciences (B.A.S.), Corresponding Member of B.A.S., and a Member of Editorial Board of “Journal of Inequalities and Special Functions”, is born on July 7, 1934 in the Bulgarian village Oreshak. Prof. Dimovski started his successful mathematical carrier yet as a pupil in the secondary school in the town of Troyan, near to his born village, when he received a prize as a winner in the first national mathematical olympiad in Bulgaria. Then he graduated at the Mathematics Dept. at Sofia University, and another reason to be proud, was his active participation in the famous seminar of Prof. Jaroslav Tagamlitski on topics of real analysis, where many other students took part, later becoming known scholars. There has been also a period in his studies and research interests dedicated to Mechanics. His carrier as a teacher and assistant professor started in the town of Rousse, at a secondary school and then in the high school there. Then it continued in Sofia in the Institute of Mathematics of Bulgarian Academy Sciences, till nowadays as an Emeritus Prof. and Honorary member of Institute starting from a young mathematician (1959); through full professor (1982); a long-year chief of “Complex Analysis” department (1986-2004). He had been also a lecturer in many Bulgarian universities 2000 Mathematics Subject Classification. 44A40, 44A35, 44A15, 34B10, 47B47.