Abstract:Based on a well known Sh.-T. Yau theorem we obtain that the real part of a holomorphic function on a Kähler manifold with the Ricci curvature bounded from below by −1 is contractive with respect to the distance on the manifold and the hyperbolic distance on (−1, 1) inhered from the domain (−1, 1) × R. Moreover, in the case of bounded holomorphic functions we prove that the modulus is contractive with respect to the distance on the manifold and the hyperbolic distance on the unit disk.
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