Free ones are the equivalent of concatenating letters from an alphabet; they lack inverse elements but would otherwise be groups. They have identity elements, however, and so are more structured than semigroups. For 10 points, name these algebraic constructs with a name somewhat similar to Leibniz' 
Free ones are the equivalent of concatenating letters from an alphabet; they lack inverse elements but would otherwise be groups. They have identity elements, however, and so are more structured than semigroups. For 10 points, name these algebraic constructs with a name somewhat similar to Leibniz' quanta of soul.
Free ones are the equivalent of concatenating letters from an alphabet; they lack inverse elements but would otherwise be groups.