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Results tagged with gn.general-topology
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user 2770
Continuum theory, point-set topology, spaces with algebraic structure, foundations, dimension theory, local and global properties.
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votes
When does local invertibility imply invertibility?
For a locally invertible holomorphic function on the unitary disk $f:\Delta\rightarrow \mathbb{C}$ we have a result of Becker (1972): if $(1-|z|^2)\left|\frac{zf''(z)}{f'(z)}\right|\leq 1$, then $f$ i …
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