2 papers
math.DG2026
Joint spectrum of the sub-Laplacian and the Reeb vector field on three-dimensional Heisenberg Bieberbach manifolds
Yoshiaki Suzuki, Yuya Takeuchi
A Heisenberg Bieberbach manifold is a compact quotient of the Heisenberg group by a discrete torsion-free subgroup of its pseudo-Hermitian automorphism group. In this paper, we stu…
math.DG2024
The Folland-Stein spectrum of some Heisenberg Bieberbach manifolds
Yoshiaki Suzuki
We study the eigenvalues and eigenfunctions of the Folland-Stein operator on some examples of 3-dimensional Heisenberg Bieberbach manifolds, that is, compact quotie…