" The defect network picture works both for symmetry-protected topological (SPT) and symmetry-enriched topological (SET) phases, in systems of either bosons or fermions. "
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.115116
Classification of topological crystalline phases
https://journals.aps.org/prx/abstract/10.1103/PhysRevX.8.011040
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