Pansymmetry and fixed pansystems theorems
We continue the research of fixed pansystems theorems presented by \textit{Wu Xuemou} [Pansystems methodology: concepts, theorems and applications. V, VI. Sci. Explor. 3, No.4 (1983) and 4, No.1 (1984)] and discuss the existence, the structure and the number of fixed subsets.
scientific article; zbMATH DE number 3904506