Differential geometry

The book proposed by the reader, written by the famous domestic mathematician S.S. Bushgens (1882-1963), is a textbook on differential geometry. The author considers the following topics: a study of a flat curve according to its equation, the contact of flat curves and curvature of the curve, spatial curves, surfaces, curvature of surfaces, the method of a moving rapper for surfaces. The book contains a large number of exercises and tasks that are accompanied by either complete solutions or sufficient instructions for these decisions.
It is recommended for students, graduate students and teachers of mathematical universities, as well as specialists --- mathematicians and physicists who use differential geometry methods in their research