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math.QA2026
A multigraph approach to confusability in quantum channels
Sk Asfaq Hossain, Angshuman Bhattacharya
We introduce a new approach to confusability in a quantum channel, namely quantum confusability multigraph, which incorporates the output information into the graphical structure.…
math.QA2017
Property (T), property (F) and residual finiteness for discrete quantum groups
Angshuman Bhattacharya, Michael Brannan, Alexandru Chirvasitu +1
We investigate connections between various rigidity and softness properties for discrete quantum groups. After introducing a notion of residual finiteness, we show that it implies…