Double sections and dominating maps

Details Double sections and dominating maps Double sections and dominating maps

1999-04-19

arxiv.org/abs/math/9904183v1

Mathematics

Complex Variables

Scientific paper

As is well-known, given the complex sphere P^1 minus two points, there exist nonconstant holomorphic maps from the plane into this set, the simplest example of which is given by applying the exponential map and then composing with a M\"obius transformation taking 0 and 1 to the two given punctures. Likewise, given the sphere minus one point, we can map the plane into this set by simply applying directly a M\"obius transformation taking 1 to this puncture. In this paper we prove a parametrized version of this result.

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