@misc{gfp_representation_s_3_sgn,
  author = {{Groups for Physics}},
  title = {S₃ · sgn},
  howpublished = {Groups for Physics reference},
  url = {https://groups.qft.org/atlas/representations/s-3-sgn/},
  version = {2026.11-workbench.4},
  note = {Research workbench IV; review status recorded on canonical page}
}