Central elements in the ${\mathrm{SL}}_d$-skein algebra of a surface

Francis Bonahon, Vijay Higgins

The ${\mathrm{SL}}_d$-skein algebra ${\mathcal{S}}_{{\mathrm{SL}}_d}^q(S)$ of a surface $S$ is a certain deformation of the coordinate ring of the character variety consisting of flat $\…