In this paper, we take Q16 subsemilattice of D and we will calculate the number of right unit, idempotent and regular elements α of BX (Q16) satisfied that V (D, α) = Q16 for a finite set X. Also we will give a formula for calculate idempotent and regular elements of BX (Q) defined by an X-semilattice of unions D.
Albayrak, B., Aydin, N. and Diasamidze, Ya. (2013) Reguler Elements of the Complete Semigroups of Binary Relations of the Class ∑7(X,8). International Journal of Pure and Applied Mathematics, 86, 199-216.