(right)adequate semigroup
(quasi-) adequate semigroup
naturally ordered quasi-adequate semigroup
quasi-adequate semigroup
weakly quasi-adequate semigroup
PROCEED RIGHT OR KEEP RIGHT
right crop for right land
right crop for right time
right hand screw [= right handed screw]
right weak complete right pordered semigroups
right-anglerectangular prisms right-hand circular polarization
the right to vote and the right to be elected
matrix semigroup and commutative semigroup
semigroup of strongly continuous operators(C 0-semigroup)
0-minimal right *-ideal