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math.QA2021
Levi-Civita connections from toral actions
Suvrajit Bhattacharjee, Soumalya Joardar, Sugato Mukhopadhyay
We construct tame differential calculi coming from toral actions on a class of -algebras. Relying on the existence of a unique Levi-Civita connection on such a calcul…
math.QA2021★ 9 cited
Quantum Galois groups of subfactors
Suvrajit Bhattacharjee, Alexandru Chirvasitu, Debashish Goswami
For a finite-index subfactor , we prove the existence of a universal Hopf -algebra (or, a discrete quantum group in the analytic language) acting…