Apr 22'25

Exercise

[math] \newcommand{\mathds}{\mathbb}[/math]

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Compute the quantum isometry groups of the twisted polygonal spheres, which are by definition given by

[[math]] C(\bar{S}^{N-1,d-1}_\mathbb R)=C(\bar{S}^{N-1}_\mathbb R)\Big/\Big \lt x_{i_0}\ldots x_{i_d}=0,\forall i_0,\ldots,i_d\ {\rm distinct}\Big \gt [[/math]]

at the missing values of the parameter, [math]d=3,4,\ldots,N-1[/math].