Well, in this case is not a matter of the property of addition, right? The moves are commutative on this surface, but we can imagine topologies where they are not commutative. So it must be a property of the surface, right?
Well, in this case is not a matter of the property of addition, right? The moves are commutative on this surface, but we can imagine topologies where they are not commutative. So it must be a property of the surface, right?
