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An extension of
Wolpert’s derivative formula
Caroline Series |
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Vol. 197 (2001), No. 1, 223–239
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Abstract |
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A well known formula of Wolpert expresses the derivative of length of a geodesic γ on a hyperbolic surface with respect to the Fenchel Nielsen twist about a fixed simple geodesic C as a sum of the cosines of the intersection angles between the two curves. We derive an analogous formula for the derivative of the length of γ with respect to variation of the length of the fixed curve C. |
Milestones
Received: 14 December 1998
Published: 1 January 2001
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Authors |
| Caroline Series | |
| Mathematics Institute Warwick University Coventry CV4 7AL United Kingdom |
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