Family name: Matkowski
First name: Janusz; Second name: Teofil
Date and place of birth: April 27, 1942, Narol, Poland

Primary education: Narol Primary State School, Poland 1956
Secondary education: Dubiecko State College (1956-1958), then Przemyśl State College, Poland, 1960
Master D., Mathematics: Jagiellonian University, Cracow, Poland, 1966; supervisor: Prof. Dr Hab. Stanisław Gołąb

Degrees possessed:
Ph.D., Mathematics, Jagiello University, Cracow 1970, Supervisor: Prof. Dr. Hab. Marek Kuczma
Habilitation (Doctor Habilitus), Mathematics, Jagiello University, Cracow, 1975

Scientific titles:
extraordinary professor 1984
ordinary professor 1992

diploma of the Polish Mathematical Olympiad, 1960
Polish Mathematical Reward for Young Mathematicians, 1970
laureate of the Annual Competition for the Best Polish Paper on Functional Equations (six times)

Research interest:
functional equations; iteration theory (Julia sets); nonlinear functional analysis (fixed point theory, Nemytskij substitution operators); inequalities (convex and subadditive functions, the converses of the Hölder and Minkowski inequalities); means, mean-value theorems, mean-type mappings and invariant means.

junior professor’s assistant: Jagiello University, Branch in Katowice, 1966-1968;
professor’s assistant: Silesian University, Katowice, 1968-1970;
assistant professor (Adjunct): Silesian University, 1970-1976;
associate professor (Docent): Łódź Technical University, Branch in Bielsko-Biała, and Pedagogical University, Częstochowa, 1976-1984;
extraordinary professor: Łódź Technical University, Branch in Bielsko-Biała 1984-1992, Pedagogical University, Częstochowa, 1984-1992; Silesian University 1991-1996;
ordinary professor: Łódź Technical University, Branch in Bielsko-Biała 1992-1997, Silesian University since 1996; Pedagogical University, Zielona Góra, 1997- 2000; Technical University of Zielona Góra, 2000-2001, University of Zielona Góra, since 2001.

Teaching and other academic experience:
lectures in differential and integral calculus, algebra, real and complex analysis, probability theory, functional analysis, mathematics for students in physics and engineering;
supervisor for 17 Ph.D. dissertations in mathematics;
head of the Department of Mathematics of the Technical University in Bielsko-Biała 1976-1997;
Director of the Institute of Mathematics of the Pedagogical University of Zielona Góra, 1997-1999.

Professional affiliations and other activities:
Polish Mathematical Society: member since 1968; vice-president for the provinces Silesia Region 1980-1997
American Mathematical Society: member 1970-1997
President of the Committee of Mathematical Olympiad for the Region of Bielsko-Biała, Częstochowa and Katowice;
elected member of the Mathematical Scientific Committee of the Polish Academy Of Sciences for the period 1987-1990;
editor of the Mathematical Bulletin of Łódź Technical University 1980-1995;
member of the editorial board of the Annales Mathematicae Silesiane (Since 1991), Journal of Applied Analysis (since 1995), Aequationes Mathematicae (since 1997), Journal of Mathematical Inequalities (since 2008), Delta (1998-2008).

Papers presented at the professional meetings: 95

Invited lectures at foreign universities (35): Debrecen (Hungary 1985); Novi Sad (Yugoslavia, 1986); Niš (Yugoslavia, 1986); Riazan (five lectures) (Soviet Union, 1990); Siegen (West Germany,1990); Karlsruhe (West Germany, 1990); Waterloo (two lectures) (Canada, 1991); Vienna (Austria, 1991); Caracas (6 lectures: at Universidad Central de Venezuela, Universidad Simon Bolivar and Universidad Nacional Abierta) (Venezuela, 1992); Universidad de Oriende, Núcleo de Sucre (two lectures) (Caracas, 1992); Graz (two lectures) (Austria, 1992); Bern (Switzerland, 1994); Vienna (Austria,1998); Chengdu (3 lectures, People Republic of China, 2001); Graz (Austria, 2003); Caracas (Venezuela, 2006); Valence (Spain, 2007); Haifa (Israel, 2007); Tunis (Tunisia, 2009); Caracas (Venezuela, 2011)

Author or co-author of 210 published articles.