We present the classification of involutions on Enriques surfaces. We classify them into 18 types with the help of lattice theory due to Nikulin. We also give geometric realizations to all types.
机构:
Univ Tokyo, Grad Sch Math Sci, Meguro Ku, 3-8-1 Komaba, Tokyo 1538914, JapanUniv Tokyo, Grad Sch Math Sci, Meguro Ku, 3-8-1 Komaba, Tokyo 1538914, Japan