👉 In mathematics, a semibastion is an algebraic structure that has both a left and right inverse. It's a special kind of groupoid. A semibastion consists of two groups, one acting on itself by left multiplication and another acting on itself by right multiplication. The left and right actions are not necessarily identical, but they commute with each other. For example, consider the following structure: - Group A = {a, b, c} - Group B = {b
