Immersions of open Riemann surfaces into the Riemann sphere
- Autores: Forstnerič F.1,2
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Afiliações:
- University of Ljubljana
- Institute of Mathematics, Physics and Mechanics
- Edição: Volume 85, Nº 3 (2021)
- Páginas: 239-260
- Seção: Articles
- URL: https://journals.rcsi.science/1607-0046/article/view/133886
- DOI: https://doi.org/10.4213/im8980
- ID: 133886
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Resumo
In this paper we show that the space of holomorphic immersions from any given open Riemann surface $M$into the Riemann sphere $\mathbb{CP}^1$ is weakly homotopy equivalent to the space of continuous maps from$M$ to the complement of the zero section in the tangent bundle of $\mathbb{CP}^1$. It follows in particular that thisspace has $2^k$ path components, where $k$ is the number of generators of the first homology group$H_1(M,\mathbb{Z})=\mathbb{Z}^k$. We also prove a parametric version of the Mergelyan approximation theoremfor maps from Riemann surfaces to an arbitrary complex manifold, a result used in the proof of our main theorem.
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Sobre autores
Franc Forstnerič
University of Ljubljana; Institute of Mathematics, Physics and MechanicsBibliografia
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