1.Department of Mathematics and Statistics, La Trobe University, Melbourne, VIC, 3086, Australia ;2.School of Mathematics and Statistics, Lanzhou University, Lanzhou, 730000, People’s Republic of China ;
Abstract:
Semigroup Forum - The variety generated by the Brandt semigroup $$B_2$$ can be defined within the variety generated by the semigroup $$A_2$$ by the single identity $$x^2y^2approx y^2x^2$$ . Edmond...