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math.AG1999
On the complete classification of extremal log Enriques surfaces
K. Oguiso, D. -Q. Zhang
We show that there are exactly, up to isomorphisms, seven extremal log Enriques surfaces Z and construct all of them; among them types D_{19} and A_{19} have been shown of certain…
math.AG1999
Quotients of K3 Surfaces Modulo Involutions
D. -Q. Zhang
Let X be a K3 surface with an involution g which has non-empty fixed locus X^g and acts non-trivially on a non-zero holomorphic 2-form. We shall construct all such pairs (X, g) in…