Gorenstein stable log surfaces with (KX+Λ)2=pg(X,Λ)−1(K_X+Λ)^2=p_g(X,Λ)-1

preprint2020arXivOpen access

Abstract

In this paper, we will give a complete classification of Gorenstein stable log surfaces (X,Λ)(X,Λ) with (KX+Λ)2=pg(X,Λ)−1(K_X+Λ)^2=p_g(X,Λ)-1, where pg(X,Λ):=h0(X,KX+Λ)p_g(X,Λ):=h^0(X,K_X+Λ). In particular, we classify Gorenstein stable surfaces with KX2=pg−1K_X^2=p_g-1.

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