In his classification of complete minimal surfaces of finite total curvature -8πi from 1992, Francisco López constructs also 2-ended spheres whose ends have winding number 2.

The simplest case is trivial: You can just take the double cover of a catenoid, which will look exactly like the catenoid. He finds, however, a 2-parameter family of such surfaces, the most symmetric of which has Enneper-Weierstraß data

G(z) = \frac1{\sqrt2}\left(z+\frac1z\right), \qquad dh = \frac{i}{\sqrt2}\left(z+\frac1z\right)\, dz\ .


F. López: The Classification of Complete Minimal Surfaces with Total Curvature Greater than -12π, Trans. Amer. Math. Soc. 334, 49-73, 1992

Mathematica Notebook

PoVRay Source


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s