On the Torsional Energy of Deformed Curves and Knots

Ljubica S. Velimirović received her B. S. at the Faculty of Philosophy, University of Niš, in 1979, an M. S. at the Faculty of Philosophy, University of Niš, in 1991, and a Ph.D. at the Faculty of Mathematics, University of Belgrade, in 1998. She has been a Full Professor at the Faculty of Science and Mathematics, University of Niš, Serbia, since February 5th, 2008. She was an Associate Professor at the Faculty of Science and Mathematics, University of Niš, Serbia, from 2003 to 2008; an Assistant Professor at the Faculty of Science and Mathematics, University of Niš, Serbia, from 1998 to 2003; a Teaching Assistant at the Faculty of Civil Engineering and Architecture, University of Niš, Serbia, from 1991 to 1998; and a Professor at Technical School, Niš, from 1980 to 1991. She is a member of the EMS—European Mathematical Society; EWM—European Women in Mathematics; AWM—Association for  Women in Mathematics; JUGING—Jugoslav Association for Descriptive Geometry and Engineering Graphics; and ISGG—International Society for Geometry and Graphics.

Marija S. Najdanović received her Bachelor's degree at the Faculty of Sciences and Mathematics, University of Niš, Serbia, from 2002 to 2007, and a Ph.D. at the Faculty of Sciences and Mathematics, University of Niš from 2007 to 2012. From 2007 to 2013, she worked as an Assistant at the Preschool Teacher Training College in Kruševac, Serbia. From 2013 to 2014, she was a Lecturer, and from 2014 to 2019, a Professor of vocational studies. From 2019 to 2023, she was an Assistant Professor at the Department of Mathematics, Faculty of Sciences and Mathematics, University of Priština in Kosovska Mitrovica, Serbia. Since 2023, she has been working as an Associate Professor at the Faculty of Sciences and Mathematics in Kosovska Mitrovica.