Assertion: ring's set | /r/HasProperty | an identity element
Facets:
Source sentences:
text: A group is an algebraic system consisting of a set, an identity element, one operation and its inverse operation.
text: A ring is an algebraic system consisting of a set, an identity element, two operations and the inverse operation of the first operation.
text: A field is an algebraic system consisting of a set, an identity element for each operation, two operations and their respective inverse operations.