1. Discrete mathematics is a mathematical discipline that studies the structure and relationship of discrete quantities, and it is an important branch of modern mathematics.

2. Discrete mathematics is a comprehensive subject that integrates traditional logic, set theory (including functions), number theory, algorithm design, combinatorial analysis, discrete probability, relation theory, graph theory and tree, abstract algebra (including algebraic system, group, ring, field, etc.). ), Boolean algebra and computational models (languages and automata). The application of discrete mathematics covers many fields of modern science and technology.