Recently, G. Thierrin 6, 7 has discussed some kinds of ideals in any ring and associative (i.e.semigroup).An associative means an algebraic system with an associative law, i.e. semigroup.This termi- nology was suggested by Dr. F. Klein in his letter (May 15, 1958) to the present writer.In his papers [1, 2], F. Klein has stated that the word is better than semigroup.L. Lesieur and R. Croisot [3-
P. DheenaB. ElavarasanK. Porselvi
A. KhaksariSirus JahanpanahA. Jafari
J. Catherine Grace JohnA. Elsy Gnana Pushpam