R. M. Kiehn Int. Journ. of Modern Physics, vol5 #10 June 1991 p. 1779
A Maxwell system of differential forms induces a course topology on a space time
variety. This topology can be refined by certain extremal constraints of domain
closure that lead to topologically distinct, reactive impedances, Z1, Z2, Z3.
These non-dissipative impedances are rational fraction ratios of topological
invariants. The closure conditions induce physical constraints that permit Z1 to
be identified with the ordinary type I and II superconductive domains, and Z3
with the fractional quantum Hall effect. Only Z2 admits the time-reversal and
parity symmetry breaking associated with Anyon theories.