Interdisciplinary Synthesis at the Intersection of Branches of Law: General Logical Method of Cognition and Substitution of Analogy

Objective. The article substantiates the need to apply interdisciplinary synthesis as a method of cognition in order to use it not only for research purposes, but also in the process of regulation of disputable legal relations, because the study of factual circumstances by the court, their analysis and qualification of the set of established facts is the process of cognition within the framework of the established by law procedure. The purpose of the article is to explain, from the point of view of interdisciplinary synthesis and the need to protect the requirements of fairness and good faith, the progressive legal positions of the court decisions applying the norms of civil law to disputable public legal relations in exceptional cases. Model. The methodological basis of the article is the author's use of methods of synthesis and analysis, description and interpretation; the formation of a legal position on the issue of the possibility of applying civil law institutions to regulate public legal relations and vice versa. Conclusions. In exceptional cases, interdisciplinary synthesis can replace a legislative analogy and an analogy of law. Interdisciplinary synthesis allows to combine into one universal legal mechanism all criteria of good faith, developed to date by international law, legislation and judicial practice for the most effective protection against bad faith behavior of subjects of law. The product of synthesis is also an inseparable connection of the principles of justice and good faith as a dialectical unity of quantitative and qualitative characteristics. The method of legal regulation is the negation, and in relation to the protection of the requirements of the principle of good faith — the negation of bad faith behavior. Framework of the research/possible further use of the results of the scientific work. The results of the article are part of the study of methodological problems of civil and public law research, issues of application of the principles of justice and good faith. Practical importance. The conclusions of the article will be useful when courts consider the tax disputes and the cases on the return of property to state ownership, when it was taken out of state ownership through corruption and (or) abuse of power, in particular, the objects of cultural heritage, ports of interregional importance, nature reserves and other objects of importance to the population of the country. Social consequences. The existence of a method of legal regulation based on the principles of justice and good faith — negation of bad faith behavior — is substantiated. This method allows to the courts and participants of the disputes to apply the principle of good faith as a rule of direct action on the basis of different sources of law (mandatory and recommendatory; regardless of the sphere of legal relations and branch of law regulated by them). Originality/value. The article is addressed to the legal scientific community, legal practitioners, can be useful for students of law faculties at universities.