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arxiv: 1901.04042 · v1 · pith:TXTB22RGnew · submitted 2019-01-13 · 🧮 math.AG · math.CV· math.DG

Degrees d geqslant big( sqrt{n}\, log\, nbig)^n and d geqslant big( n\, log\, nbig)^n in the Conjectures of Green-Griffiths and of Kobayashi

classification 🧮 math.AG math.CVmath.DG
keywords geqslantgreen-griffithsmathbbalgebraicconjectureconjecturescurvesdimension
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Once first answers in any dimension to the Green-Griffiths and Kobayashi conjectures for generic algebraic hypersurfaces $\mathbb{X}^{n-1} \subset \mathbb{P}^n(\mathbb{C})$ have been reached, the principal goal is to decrease (to improve) the degree bounds, knowing that the `celestial' horizon lies near $d \geqslant 2n$. For Green-Griffiths algebraic degeneracy of entire holomorphic curves, we obtain: \[ d \,\geqslant\, \big(\sqrt{n}\,{\sf log}\,n\big)^n, \] and for Kobayashi-hyperbolicity (constancy of entire curves), we obtain: \[ d \,\geqslant\, \big(n\,{\sf log}\,n\big)^n. \] The latter improves $d \geqslant n^{2n}$ obtained by Merker in arxiv.org/1807/11309/. Admitting a certain technical conjecture $I_0 \geqslant \widetilde{I}_0$, the method employed (Diverio-Merker-Rousseau, B\'erczi, Darondeau) conducts to constant power $n$, namely to: \[ d\ ,\geqslant\, 2^{5n} \qquad \text{and, respectively, to:} \qquad d \,\geqslant\, 4^{5n}. \] In Spring 2019, a forthcoming prepublication based on intensive computer explorations will present several subconjectures supporting the belief that $I_0 \geqslant \widetilde{I}_0$, a conjecture which will be established up to dimension $n = 50$.

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