Holonomy perturbations in a cylinder, and regularity for traceless SU(2) character varieties of tangles

Christopher M. Herald, Paul Kirk

The traceless $SU(2)$ character variety $R(S^2,\{a_i,b_i{\}}_{i=1}^n)$ of a $2n$-punctured 2-sphere is the symplectic reduction of a Hamiltonian $n$-torus action on the $SU(2)$ chara…