Abstract:
This paper concerns the properties of the functional system $C_n$. This system has the domain $2^{\mathbb{Z}}$, and is generated by functions $2^{\mathbb{Z}} \setminus x $, $x \cup y$, $x \cap x$ and power indicators $card_0(x)...card_n(x)$.
Keywords:functional system, precomplete class, set algebra, completion criteria