In searching for answers to the question of what unifies current extensive and often disorganized legal system, we often turn to theoretical conceptions of a legal system. Transformations in post-war law characterized by the recognition of legal principles and values in law as abstract regulatory ideas fundamentally transform the prevailing paradigm of the legal system.
Legal pluralism and the increasing regulation of social relations brought entirely new challenges. The relatively narrow topic of this article is a concept of the systematicity of law in the works of two important personalities of legal theory and sociology of law of the last century, H.
L. A.
Hart and Niklas Luhmann, and their influence on current conception of a legal system.