@misc{gfp_space_su_2_over_u_1,
  author = {{Groups for Physics}},
  title = {SU(2)/U(1) ≅ S²},
  howpublished = {Groups for Physics reference},
  url = {https://groups.qft.org/atlas/spaces/su-2-over-u-1/},
  version = {2026.11-workbench.4},
  note = {Research workbench IV; review status recorded on canonical page}
}