To the 150th anniversary of N.M. Gunther (1871-1941)

Professor and corresponding member of the USSR Academy of Sciences, Nikolai Maksimovich Gunther devoted his life to science and teaching at the universities of St. Petersburg-Petrograd-Leningrad. He continued the traditions of P.L. Chebyshev, A.A. Markov, A.M. Lyapunov. His enormous pedagogical work was embodied in 47 published courses of lectures and the famous "Collection of Problems in Higher Mathematics". Gunther's activity as Chairman of the Leningrad Physics and Mathematics Society (1923-1930) in a difficult time for Russian science allowed preserving the scientific community of Leningrad mathematicians and protecting them from repression. His researches were recognized by the Russian and European mathematicians. Through the St. Petersburg Mathematical Society efforts, Gunther's tombstone was found and restored.