Griffiths' conjecture on Nevanlinna's second theorem

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Let XX be a complex projective variety, let AA be an ample line bundle on XX, and write

KX:=∧dim⁡(X)TX∗K_X:= \wedge^{\dim(X)}T_X^{\ast}

for its canonical line bundle. Let DD be a normal crossing divisor on XX. For a holomorphic curve f:C→Xf:\mathbb{C}\to X, let mf,D(r)m_{f,D}(r) denote its proximity function and Tf,A(r)T_{f,A}(r) and Tf,KX(r)T_{f,K_X}(r) its characteristic functions; write ≤exc⁡\leq_{\operatorname{exc}} for an inequality holding outside an exceptional set of values of rr.

Griffiths' conjecture. (1) For every holomorphic curve f:C→Xf:\mathbb{C}\to X with Zariski-dense image,

mf,D(r)+Tf,KX(r)≤exc⁡O(log⁡+Tf,A(r))+o(log⁡r).m_{f,D}(r)+T_{f,K_X}(r)\leq_{\operatorname{exc}}O\bigl(\log^+T_{f,A}(r)\bigr)+o\bigl(\log r\bigr).

(2) For every ϵ>0\epsilon>0, there exists an algebraic subset Z⊈XZ\nsubseteq X such that, for every holomorphic curve f:C→Xf:\mathbb{C}\to X with f(C)⊄Zf(\mathbb{C})\not\subset Z,

∀C∈R,mf,D(r)+Tf,KX(r)≤exc⁡ϵTf,A(r)+C.\forall C\in\mathbb{R},\quad m_{f,D}(r)+T_{f,K_X}(r)\leq_{\operatorname{exc}}\epsilon T_{f,A}(r)+C.

This is the conjectural form of Nevanlinna's second theorem for holomorphic curves. The supplied context does not state whether either formulation is known or remains open.

References

Primary source

Antoine Sédillot, “Topological adelic curves: Zariski-Riemann spaces, algebraic coverings, Harder-Narsimhan filtrations and heights”, arXiv:2503.20156 (2026).

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