 Symbolically, T"n" = ("S"1)"n".The configuration space of "unordered", not necessarily distinct points is accordingly the orbifold T"n"/"Sn", which is the quotient of the torus by the symmetric group on "n" letters (by permuting the coordinates).For "n" = 2, the quotient is the Möbius strip, the edge corresponding to the orbifold points where the two coordinates coincide.