TY  - JOUR
AU  - Yoshiko Ogata
TI  - An $H^{3}(G,{\mathbb T})$-valued index of symmetry-protected topological phases with on-site finite group symmetry for two-dimensional quantum spin systems
JO  - Forum of Mathematics, Pi
PY  - 2021
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1017/fmp.2021.17/
DO  - 10.1017/fmp.2021.17
LA  - en
ID  - 10_1017_fmp_2021_17
ER  -