On concluding \mid S \mid, J. Sezp suggested the study of a spacial algebra S( \cdot,x),where "\cdot" is a group operation (instead of a \cdot b we shall write ab) and "x" is a semigroup operation with an idempotent element e; moreover \forall a,b,c, \in S : (a \times b)c = ac \times bc, c (a \times b) = ca \times c^{-1}a where c^{-1} is the inverse of c in S(\cdot). The aim of this work is to analyze such an algebra.

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