Infinite fundamental group under weak semiampleness and intermediate Kodaira dimension

Let XX be a compact complex manifold, let dimX\dim X denote its complex dimension, and let k(X)k(X) denote its Kodaira dimension. Let ΩX1\Omega_X^1 be the cotangent bundle, assumed to be weakly semiample.

Infinite fundamental-group conjecture. If

dimX<k(X)\dim X<k(X)

then the fundamental group of XX is infinite.

The paper explains that the statement follows in the Kähler case from the Wu–Zheng conjecture below, while it is presented as open in the general compact complex setting.

Sources & referencesView supporting material

Primary source

Francesco Esposito and Ernesto C. Mistretta, “On semiample vector bundles and parallelizable compact complex manifolds”, arXiv:2406.04139 (2024).

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