30 Jul
2016
30 Jul
'16
4:49 p.m.
On Jul 27, 2016, at 6:35 PM, Bill Gosper <billgosper@gmail.com> wrote:
is an odd function of t? —rwg
The right question to ask, when it’s multivalued and analytic, is whether the Riemann surface has “odd symmetry”: (z1,z2) \in C^2 is on the surface iff (-z1,-z2) is on the surface. When this is true in an open neighborhood of the origin — as this case which has a regular Taylor series with only odd powers — then it holds for the entire Riemann surface by analytic continuation. -Veit