eliptic Riem rectangula 001
Inverse image of a conformal polar grid on the Riemann sphere
under the doubly periodic Jacoby type elliptic function je for a
family of rectangular tori. These tori are represented by rectangular
fundamental domains for the period translations of je.
The je-image of the upper half covers the whole sphere (same for
the lower half). The polar centers above each other are preimages
of zero (in the middle) and preimages of infinity (at the boundary).
