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Amenability, Poincaré Series and Quasiconformal Maps
(Springer Verlag, 1989)
Any covering \(Y \rightarrow X\) of a hyperbolic Riemann surface\(X\) of finite area determines an inclusion of Teichmüller spaces \(Teich(X) \hookrightarrow Teich(Y)\). We show this map is an isometry for the Teichmüller ...
Solving the Quintic by Iteration
(Springer Verlag, 1989)
Optimal Approximations by Piecewise Smooth Functions and Associated Variational Problems
(Wiley-Blackwell, 1989)