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A strengthened Schwarz-pick inequality for derivatives of the hyperbolic metric
2006
Tamkang Journal of Mathematics
This paper is to investigate the Schwarz-Pick inequality for the hyperbolic derivative. Our result is not only a contraction but also a contraction minus a positive constant and this improves Beardon's theorem greatly.
doi:10.5556/j.tkjm.37.2006.157
fatcat:tdnhqq5kjfey7hkjwnxxyxfcki