Zorich's theorem

In mathematical analysis, Zorich's theorem was proved by Vladimir A. Zorich in 1967. The result was conjectured by M. A. Lavrentev in 1938.

Theorem

Every locally homeomorphic quasiregular mapping ƒ : Rn  Rn for n  3, is a homeomorphism of Rn.

The fact that there is no such result for n = 2 is easily shown using the exponential function.

References

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