Prescribing Mean Curvature: Existence and Uniqueness Problems

TL;DR

This paper investigates how mean curvature data influences the determination of surfaces in space, focusing on Bonnet's problem, and introduces an existence theory for conformal immersions with applications to surface rigidity and topology.

Contribution

It provides new existence results for conformal immersions based on Dirac spinors and explores the topology of the moduli space of Bonnet immersions, linking geometric analysis with physical principles.

Findings

Properties of immersions with umbilics analyzed

Global rigidity results for closed surfaces established

An existence paradigm for conformal immersions developed

Abstract

This paper presents results on the extent to which mean curvature data can be used to determine a surface in space or its shape. The emphasis is on Bonnet's problem: classify and study the surface immersions in $\R^3$ whose shape is not uniquely determined by the first fundamental form and the mean curvature function. The properties of immersions with umbilics and global rigidity results for closed surfaces are presented in the first part of this paper. The second part of the paper outlines an existence theory for conformal immersions based on Dirac spinors along with its immediate applications to Bonnet's problem. The presented existence paradigm provides insight into the topology of the moduli space of Bonnet immersions of a closed surface, and reveals a parallel between Bonnet's problem and Pauli's exclusion principle.