The Tosatti–Weinkove conjecture on logarithmic poles in nef classes

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Let XX be a compact nn-dimensional complex manifold, and let {β}H1,1(X,R)\{\beta\}\in H^{1,1}(X,\mathbb{R}) be nef with Xβn>0\int_X\beta^n>0. Fix points x1,,xNXx_1,\ldots,x_N\in X and positive real numbers τ1,,τN\tau_1,\ldots,\tau_N satisfying

i=1Nτin<Xβn.\sum_{i=1}^{N}\tau_i^n<\int_X\beta^n.

A function is β\beta-plurisubharmonic if it is a β\beta-PSH function. The Tosatti–Weinkove conjecture. There exists a β\beta-PSH function φ\varphi with logarithmic poles at x1,,xNx_1,\ldots,x_N, such that in a coordinate neighbourhood (z1,,zn)(z_1,\ldots,z_n) centered at xix_i,

φ(z)τjlogz+O(1),\varphi(z)\leq\tau_j\log|z|+O(1),

where z2=z12++zn2|z|^2=|z_1|^2+\cdots+|z_n|^2. The Kähler version is known by Demailly–Păun, and the conjecture is known in dimensions 22 and 33, with partial results in general dimensions and under the assumption that β\beta is semi-positive. In the supplied source, the parser marks this candidate as resolved.

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Primary source

Yinji Li, Zhiwei Wang and Xiangyu Zhou, “Degenerate complex Monge-Ampère type equations on compact Hermitian manifolds and applications”, arXiv:2305.17955 (2023).

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