A SUFFICIENT CONDITION UNDER WHICH A SEMIGROUP IS NONFINITELY BASED
Wen Ting Zhang, Yanfeng Luo · Bulletin of the Australian Mathematical Society · 2015
We give a sufficient condition under which a semigroup is nonfinitely based. As an application, we show that a certain variety is nonfinitely based, and we indicate the additional analysis (to be presented in a forthcoming paper), which shows that this example is a new limit variety of aperiodic monoids.