semigroup
algebraic structure with an associative binary operation
band
algebraic structure: idempotent semigroup
trivial semigroup
semigroup with a single element
Quantum Markov semigroup
Mathematics
monoid
algebraic structure with an associative operation and an identity element
semigroup with two elements
example of a Semigroup
semigroup with involution
semigroup equipped with an involutive anti-automorphism
E-semigroup
semigroup in which the idempotents form a subsemigroup
catholic semigroup
semigroup in which no two distinct elements have the same set of inverses
monogenic semigroup
semigroup generated by a single element
ordered semigroup
algebraic structure
four-spiral semigroup
semigroup generated by a, b, c, d with relations a²=a, b²=b, c²=c, d²=d, ab=b, ba=a, bc=b, cb=c, cd=d, dc=c, da=d
aperiodic semigroup
semigroup S such that every element x ∈ S is aperiodic
topological semigroup
semigroup with continuous operation
E-dense semigroup
semigroup in which every element a has at least one weak inverse x,