monoid;
involution monoid;
variety;
subvariety;
lattice of varieties;
SEMIGROUPS;
D O I:
10.1142/S100538672400035X
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
In this paper, we give a sufficient condition under which an involution monoid generates a variety with continuum many subvarieties. According to this result, several involution J-trivial monoids are shown to generate varieties with continuum many subvarieties. These examples include Rees quotients of free involution monoids, Lee monoids with involution, and Straubing monoids with involution.