Pseudo-effectivity conjecture for the second Chern class of varieties with nef anticanonical divisor

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Let XX be a variety of dimension nn with only terminal singularities, and assume that −KX-K_X is nef. Let H1,…,Hn−2H_1,\ldots,H_{n-2} be ample Cartier divisors on XX.

Pseudo-effectivity conjecture for the second Chern class.

c2(X)⋅H1⋯Hn−2≥0.c_2(X)\cdot H_1\cdots H_{n-2}\geq 0.

This conjecture concerns the pseudo-effectivity of the second Chern class for varieties with nef anticanonical divisor. The source explicitly says that it remains open when 1<ν(−KX)<n1<\nu(-K_X)<n.

References

Primary source

Qihong Xie, “The Nef Curve Cone Theorem Revisited”, arXiv:math/0501193 (2005).

Additional references

3 papers in this index state this conjecture (2004–2005). The statement above is taken from the most recent of them; the others are arXiv:math/0409269, arXiv:math/0402251.

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