Date of birth: 28.02.1965. orcid.org/0000-0002-5632-0041 Education/professional training B.S. Department of Mathematics, Faculty of Philosophy, University of Nis, 1985-1990. M.S. Department of Mathematics, Faculty of Philosophy,, University of Nis, 1991-1996. Ph.D. Differential geometry, Faculty of Sciences and Mathematics,University of Nis, 2001. Assistant: Department of Mathematics, Faculty of Philosophy, University of Nis, 1991-2001. Assistant professor: Faculty of Sciences and Mathematics, Universityof Nis, 2001-2007. Associate professor: Faculty of Sciences and Mathematics, Universityof Nis, 2007-2015, Ful professor: Faculty of Sciences and Mathematics, Universityof Nis, 2015.