The Journal "Logical Investigations"
Is a scientific-research journal on logic. The edition is unique, because it is the only periodical on Logic in Russia known abroad. The journal publishes well-known domestic and foreign authors (in Russian and English), which received important results in various areas of modern logic. Each issue of "Logical Investigations" is abstracted in the main International Review Journals "Mathematical Review" and "Zentralblatt MATH", which allows the global community of logicians to become familiar with the state of research in logic conducted in Russia.
Vol 26 No 2 (2020)
This issue presents works from the fields of philosophical and non-classical logic.
Markin offers a universal language for constructing syllogistic theories, which greatly facilitates the proof of many important metatheorems. This is demonstrated by the example of positive syllogistics. V. Shalack exposes the similarities and differences between substantive and processual ontologies, and formulates a number of postulates that a processual ontology should satisfy. The apparatus for constructing propositional logic, in which accepted and rejected statements have the same syntactic status, is proposed by A. Citkin. The increasing interest in cognitive research requires a certain revision of our views on logic. These questions are raised by M. Urbanski. Closed classes of four-valued functions that form a seven-element lattice are presented by L. Devyatkin. N. Tomova considers a generalized algorithm for obtaining n-valued paraconsistent and paracomplete logics by combining isomorphs of classical logic. A discussion paper by G. Maksudova-Eliseeva is devoted to the eternal question of the nature and place of logic in our practice.