Gal''mak A.M. ON ASSOCIAtivITY OF POLYADIC GROUPOIDS
The article focuses on further investigations of polyadic operation [ ] <sub>l</sub><sub>, </sub><sub>s</sub><sub>, k </sub>. In particular it was found that the availability of left identity in semigroup A guarantees the equality of associativity and semiassociativity for this operation.