Abstract. The aim of the paper is to prove the following result: Given any finitely generated algebra $A$ of finite similarity type, there exists a $2$-unary algebra $B$ such that $B$ is generated by any of its elements and ${\rm Con}B$ is isomorphic to ${\rm Con}A$.

AMS Subject Classification (1991): 08A30

Received January 9, 1997 and in revised form August 5, 1997. (Registered under 2641/2009.)