Abstract
The main result of this note essentially is that if the base and fibers of a compact fibration carry Hermitian metrics of positive holomorphic sectional curvature, then so does the total space of the fibration. The proof is based on the use of a warped product metric as in the work by Cheung in case of negative holomorphic sectional curvature, but differs in certain key aspects, e.g., in that it does not use the subadditivity property for holomorphic sectional curvature due to Grauert-Reckziegel and Wu.
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Acknowledgements
This work was part of the first author’s Ph.D. thesis written under the direction of the second author at the University of Houston. The first author would like to thank TIFR Center for Applicable Mathematics, Bengaluru and TIFR, Mumbai for support during the time this paper was finalized.
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Chaturvedi, A., Heier, G. Hermitian metrics of positive holomorphic sectional curvature on fibrations. Math. Z. 295, 349–364 (2020). https://doi.org/10.1007/s00209-019-02341-6
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DOI: https://doi.org/10.1007/s00209-019-02341-6