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 
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.