The inverse hull of right cancellative semigroups
The main result says that the inverse hull of a left reductive right cancellative semigroup S (defined in a way slightly different from the usual one) is E-unitary iff S is cancellative and right reversible. A similar condition for the inverse hulls of cancellative reversible semigroups is found.
left reductive right cancellative semigroup
scientific article; zbMATH DE number 4051900