In the textbook, the parts of the theory of matrices are briefly described, which are widely used in any field of mathematics, as well as in solving many practical problems.

The material presented can be considered as a supplement to a traditional linear algebra course.

The study manual is intended for students, masters and PhD students, engaged in the field of mathematical studies at the universities. It may also be useful to professionals in related fields, as well as those interested in mathematics in general and its applications.