The destinies and activities of prominent Russian scientists in various branches of science are connected with the Tver land. Readers are invited to a collection of biographical essays about mathematicians whose works have become the property of fundamental science, pedagogy, and have found application in technology and military affairs: L.F. Magnitsky, S.Ya. Rumovsky, D.S. Chizhove, N.V. Maievsky, I.A. Vyshnegradsky, V.I. Smirnov, V.M. Bradise, G.M. Goluzine, A.I. Markushevich, P.P. Korovkina, N.M. Afanasiev, E.V. Zolotov.