Abstract (EN):
This paper determines all pseudovarieties of finite semigroups whose powers are contained in DA, As an application, it is shown that it is computable. for a decidable pseudovariety V of aperiodic semigroups, the least exponent n such that the iterated power (PV)-V-n is the pseudovariety of ail finite semigroups.
Language:
English
Type (Professor's evaluation):
Scientific