👉 In mathematics, a "lière" is an algebraic structure consisting of a set \(S\) and a binary operation \(
: S \times S \to S\), where \(
a
b = ab + ba\) for all elements \(a\) and \(b\) in the set \(S\). This operation satisfies several properties such as associativity, commutativity, distributivity over addition, and identity elements.