Flexible algebra
ALGEBRA WHOSE INTERNAL BINARY OPERATION OVER ITS BASE SET IS ASSOCIATIVE AND COMMUTATIVE AT LEAST FOR ANY TRIPLET OF THE SAME BASE SET WHOSE FIRST AND LAST OF THE THREE ITEMS ARE EQUAL
Flexible identity; Flexible binary operation; Flexible binary operator; Flexible operator; Flexible operation; Flexible magma; Flexibility (abstract algebra)
In mathematics, particularly abstract algebra, a binary operation • on a set is flexible if it satisfies the flexible identity: