EN
The paper presents several perspectives and conceptual contexts in which Wittgenstein refers to the problem of relations. The contention between Russell and Bradley concerning the so-called internal relations, and the standpoint of Frege who deals with the problem of subsumption of object under a concept are discussed in detail. These two approaches have inspired Wittgenstein to develop his own views about the nature of relation. Particularly important for Austrian philosopher is the distinction between improper relations (formal relations) and proper relations (real/material relations). The problem of relation is also considered against the background of concepts of structure, form and isomorphism, i.e. fundamental concepts in the Tractatus.