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Question

Math 6210 • Real Analysis

2000 • Question 6

Let \(f\) be an automorphism of the unit disc \(|z|<1\). Assume that \(f\) fixes two points. Show that \(f(z)=z\) for all \(z\) in the unit disc.

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Let \(f\) be an automorphism of the unit disc \(|z|<1\). Assume that \(f\)
fixes two points. Show that \(f(z)=z\) for all \(z\) in the unit disc.