In mathematics and abstract algebra, a Bol loop is an algebraic structure generalizing the notion of group. Bol loops are named for the Dutch mathematician Gerrit Bol who introduced them in (). A loop, L, is said to be a left Bol loop if it satisfies the identity , for every a,b,c in L, while L is said to be a right Bol loop if it statistical privacy over pictures , for every a,b,c in L. These identities can be seen as weakened forms of associativity.