Covers all sections of modern primary courses in physics and mathematics. It contains definitions of basic concepts, physical and mathematical quantities, formulations of physical laws, mathematical axioms and theorems, the most important formulas. All information is brought into a consistent system, which creates convenience in the practical application of the reference book, for example, when solving problems. For students and teachers of secondary school, technical schools, students of preparatory departments of universities, as well as students of pedagogical and technical universities.