Alexander Ivanovich Nizhnikov (on the 75th anniversary of his birth)

On April 11, 2021, Alexander Ivanovich Nizhnikov turned seventy-five years old, a well-known Russian mathematician, Professor, Doctor of Pedagogical Sciences, Head of the Department of Technological and Information Systems of the Institute of Physics, Technology and Information Systems of the Moscow Pedagogical State University (MSPU), Vice-Rector of MSPU. Alexander Ivanovich Nizhnikov has made a significant contribution to development of Russian scientific school on Functional Analysis. Moreover, the scientific and educational activities of Professor A. I. Nizhikov have been very influential in the development of higher education in Russia. Alexander Ivanovich Nizhnikov published more than 150 scientific and methodical works. For many years he is a member of the editorial board of the journal “Chebyshevskii Sbornick”. For achievements in the development of Russian Science and Education A. I. Nizhnikov was awarded several medals and honorary signs.