Irreducibility conjecture for extremal logarithmic 2-jet differentials

From papers

Let cmathcalCsubsetcmathbbP2cmathcal{C}subsetcmathbb{P}^2 be a configuration of three conics with simple normal crossings. For any cepsilon>0cepsilon>0, define the logarithmic 22-jet differential space by

H0 ⁣(P2,E2,mTP2(logC)OP2(t)).H^0\!\left(\mathbb{P}^2,E_{2,m}T^*_{\mathbb{P}^2}(\operatorname{log}\mathcal{C})\otimes\mathcal{O}_{\mathbb{P}^2}(-t)\right).

Irreducibility conjecture. For every cepsilon>0cepsilon>0, there exists a nonzero negatively twisted invariant logarithmic 22-jet differential comegacomega in this space with

θ2(X,C)ϵ<tm<θ2(X,C),\overline{\theta}_2(X,\mathcal{C})-\epsilon<\frac{t}{m}<\overline{\theta}_2(X,\mathcal{C}),

whose zero locus cω=0X2c{\omega=0}\subset X_2 is irreducible and reduced modulo cGamma2cGamma_2. This conjecture would avoid the key vanishing lemmas and yield a Second Main Theorem constant approximately 1/θ2(P2,C)<3.581/\overline{\theta}_2(\mathbb{P}^2,\mathcal{C})<3.58\ldots; its resolution is not supplied here.

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Sources & referencesView supporting material

Primary source

Lei Hou, Dinh Tuan Huynh, Joël Merker and Song-Yan Xie, “A Second Main Theorem for Entire Curves Intersecting Three Conics”, arXiv:2512.03948 (2026).

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