On solutions of systems of functional Boolean equations

Solutions of systems of functional Boolean equations are considered. For each class $P_2,T_0,T_1,S,T_{01}$, and $S_{01}$ the problem of construction of functional Boolean equations systems with a fixed set of functional constants and one functional variable whose unique solution is of the concerned class is solved. For an arbitrary nonempty set $F$ of $n$-argument Boolean functions, the system of equations with functional constants $\vee$ and $\&$ is built with $F$ as the solution set. If the above-mentioned set $F$ is closed under transition to dual functions, then the corresponding system of functional Boolean equations can be constructed without functional constants at all. Bibl. 12.