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Author

Chun-Kai Lien

3 papers indexed here

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Preprint Oct 2026

The Sharp Isoperimetric Inequality in the First Heisenberg Group

We prove the sharp horizontal isoperimetric inequality in the first Heisenberg group for all sets of finite horizontal perimeter and positive finite volume, with equality precisely for left translates and dilates of the Pansu ball.

Wei-Chun Chen, Wei-Ting Kao, Chun-Kai Lien · 0 citations
Preprint Oct 2026

The Isoperimetric Inequality in Higher-Dimensional Heisenberg Groups

We prove the sharp horizontal isoperimetric inequality in $\mathbb H^n$, $n\ge2$, with equality precisely for left translates and Heisenberg dilations of Pansu balls, up to Haar-null sets.

Wei-Chun Chen, Wei-Ting Kao, Chun-Kai Lien · 1 citation
Preprint Oct 2026

Quantitative Centre Rigidity under Riemannian Approximation in Heisenberg Groups

For $n\ge2$, we prove a quantitative centre-rigidity estimate for bounded sets of finite Riemannian perimeter that are stationary and volume-constrained stable for normalized Riemannian perimeter with prescribed curvature $h_j$. Under confinement to a fixed compact set and cutoffs of vanishing full surface Dirichlet en...

Wei-Chun Chen, Wei-Ting Kao, Chun-Kai Lien · 2 citations

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