Also in 1976, Xu determined the Lie algebra aut(Z)(VN,F)) of the holomorphic automorphism group Aut (D(VN,F)) and the generating elements of the affine automorphism group Aff (D(VN, F)).

• 1976年；许以超还定出了全纯自同构群Aut(D(V_N；F))的李代数aut(D(V_N；F))和仿射自同构群Aff(D(V_N；F))的生成元.