Algebraic Green–Griffiths–Lang conjecture for log varieties

Let XX be a smooth projective variety and DD a simple normal crossings divisor such that KX+DK_X+D is big. Let LL be an ample line bundle on XX, and let g(C)g(C) denote the geometric genus of a smooth projective curve CC. Algebraic Green–Griffiths–Lang conjecture. There exist an ϵ>0\epsilon>0 and a subvariety SXS\subsetneq X such that, for every nonconstant map f:CXf:C\to X from a smooth projective curve satisfying f(C)⊄DSf(C)\not\subset D\cup S, one has

2g(C)2+f1(D)>ϵdegfL.2g(C)-2+|f^{-1}(D)|>\epsilon\deg f^*L.

The source identifies this as Demailly's weaker algebraic version of the Green–Griffiths–Lang conjecture and notes that it is more tractable than the full analytic statement; the paper proves it for the complements under study.

Sources & referencesView supporting material

Primary source

Xi Chen, Eric Riedl and Wern Yeong, “Algebraic Hyperbolicity of Complements of Generic Hypersurfaces in Projective Spaces”, arXiv:2208.07401 (2023).

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