Prof. József Sándor was born on November 19, 1956 in Farcád (Forteni), Jud. Harghita, Romania. He studied at the Department of Mathematics and Physics in Babeș-Bolyai University of Cluj, Romania, and defended his PhD dissertation on the subject of generalized convexity and its applications in 1998. His main fields of interests are essentially in number theory, mathematical analysis, special functions, classical geometry and history of mathematics. He has published more than 1000 scientific papers and 500 methodical–scientific papers as well as 12 books in various fields of mathematics. His best known books are Handbook of Number Theory I and II, published by Springer (1996, 2004, 2006). He is the editor or associate editor of more than 20 international journals. His main interests in number theory are arithmetical functions in algebra, analysis and geometry; asymptotics of arithmetic functions; inequalities in number theory; irrationality or transcendence of series and special numbers; special functions related to number theory; history of number theory and related fields.

József Sándor, PhD Professor, : Department of Mathematics, Babeș-Bolyai University, Cluj, Romania

Prof. József Sándor was born on November 19, 1956 in Farcád (Forteni), Jud. Harghita, Romania. He studied at the Department of Mathematics and Physics in Babeș-Bolyai University of Cluj, Romania, and defended his PhD dissertation on the subject of generalized convexity and its applications in 1998. His main fields of interests are essentially in number theory, mathematical analysis, special functions, classical geometry and history of mathematics. He has published more than 1000 scientific papers and 500 methodical–scientific papers as well as 12 books in various fields of mathematics. His best known books are Handbook of Number Theory I and II, published by Springer (1996, 2004, 2006). He is the editor or associate editor of more than 20 international journals. His main interests in number theory are arithmetical functions in algebra, analysis and geometry; asymptotics of arithmetic functions; inequalities in number theory; irrationality or transcendence of series and special numbers; special functions related to number theory; history of number theory and related fields.

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