Elena Nikolaevna Smirnova
Orenburg State University
Russian Federation

senior lecturer of the Department of algebra and discrete mathematics

Olga Alexandrovna Pikhtilkova
MIREA - Russian Technological University
Russian Federation

Candidate of Physics and Mathematics Sciences, docent,
associate professor of the department of higher mathematics-2

Nikolai Nikolaevich Dobrovol’skii
Tula State University, Tula State L. N. Tolstoy Pedagogical University
Russian Federation

candidate of physical and mathematical sciences, associate professor of the department of general and theoretical physics, associate Professor of algebra, mathematical analysis and geometry

Irina Yur'evna Rebrova
Tula State L. N. Tolstoy Pedagogical University
Russian Federation

candidate of physical and mathematical sciences, associate professor, dean of the Faculty of Mathematics, Physics and Informatics

Nikolai Mihailovich Dobrovol’skii
Tula State L. N. Tolstoy Pedagogical University
Russian Federation

doctor of physical and mathematical sciences, professor, head of the department of algebra, mathematical analysis and geometry