Paper 1, Section II, H
If is a Riemann surface and is a covering map of topological spaces, show that there is a conformal structure on such that is analytic.
Let be the complex polynomial . Consider the subspace of given by the equation , where denotes coordinates in , and let be the restriction of the projection map onto the first factor. Show that has the structure of a Riemann surface which makes an analytic map. If denotes projection onto the second factor, show that is also analytic. [You may assume that is connected.]
Find the ramification points and the branch points of both and . Compute also the ramification indices at the ramification points.
Assuming that it is possible to add a point to so that is a compact Riemann surface and extends to a holomorphic map such that , compute the genus of