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Simple curves in $\mathbb {R}^n$ and Ahlfors’ Schwarzian derivative

Simple curves in $\mathbb {R}^n$ and Ahlfors’ Schwarzian derivative

We derive sharp injectivity criteria for mappings $f:(-1,1)\rightarrow \mathbb {R}^n$ in terms of Ahlfors’ definition of the Schwarzian derivative for such mappings.