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Properly embedded and immersed minimal surfaces in the Heisenberg group

Jih-Hsin Cheng·Jenn-Fang Hwang
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Abstract

We study properly embedded and immersed p(pseudohermitian)-minimal surfaces in the 3-dimensional Heisenberg group. From the recent work of Cheng, Hwang, Malchiodi, and Yang, we learn that such surfaces must be ruled surfaces. There are two types of such surfaces: band type and annulus type according to their topology. We give an explicit expression for these surfaces. Among band types there is a class of properly embedded p-minimal surfaces of so called helicoid type. We classify all the helicoid type p-minimal surfaces. This class of p-minimal surfaces includes all the entire p-minimal graphs (except contact planes) over any plane. Moreover, we give a necessary and sufficient condition for such a p-minimal surface to have no singular points. For general complete immersed p-minimal surfaces, we prove a half space theorem and give a criterion for the properness.

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Jih-Hsin Cheng, Jenn-Fang Hwang. 2004-07-07. Properly embedded and immersed minimal surfaces in the Heisenberg group. https://arxiv.org/abs/math/0407094

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