Manetti's geography inequality for irregular surfaces

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Let XX be a minimal surface of general type and maximal Albanese dimension with irregularity q≥4q\geq 4. Manetti's geography conjecture. One should have

KX2≥4χ(OX)+4(q−3).K_X^2\geq 4\chi(\mathcal O_X)+4(q-3).

This inequality concerns how the irregularity constrains the geography of surfaces of general type and maximal Albanese dimension. The source presents it as a conjecture of Manetti and states that it is proved there when KX2≥36(q−2)K_X^2\geq 36(q-2) or χ(OX)≥8(q−2)\chi(\mathcal O_X)\geq 8(q-2); the supplied status therefore records it as resolved.

References

Primary source

Xin Lu and Kang Zuo, “On the Severi type inequalities for irregular surfaces”, arXiv:1504.06569 (2015).

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