Abstract
We prove the classical Yano-Obata conjecture by showing that the connected component of the group of $h$-projective transformations of a closed, connected Riemannian Kähler manifold consists of isometries unless the manifold is the complex projective space with the standard Fubini-Study metric (up to a constant).
Citation
Vladimir S. Matveev. Stefan Rosemann. "Proof of the Yano-Obata conjecture for $h$-projective transformations." J. Differential Geom. 92 (2) 221 - 261, October 2012. https://doi.org/10.4310/jdg/1352297807
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