The G-undistinguishability criterion (Q1825194)

The concepts of physical relations and undistinguishability were introduced by the author in his previous paper [ibid. 10, 11-25 (1980; Zbl 0495.08001)]. If G is a set of physical relations, a set \(\{R_ t\}\), \(t\in T\) is called a criterion of G-undistinguishability if it satisfies a certain relational condition mentioned in this paper. The main result states that for every non-void homogeneous set G of physical relations there exists a criterion of G-undistinguishability.