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The textbook is based on the experience of reading the course «Modern Logic» at the Taras Shevchenko National University of Kyiv, National University of Kyiv-Mohyla Academy.

The textbook reveals the historical and theoretical prerequisites for the emergence of modern logic. In the part «Classical Logic» the specifics and features of the algebraic system and numbers are analysed.

The unity of the logic of statements and the logic of predicates is shown on specific material. Particular attention is paid to the nature of non-classical logic and the ways of applying its tools for the needs of the cognitive process.

The book is intended for students of higher educational institutions, postgraduate students, as well as for all those interested in the problems of modern logic and wishing to join the treasury of logical science.