The Obata first eigenvalue theorems on a seven dimensional quaternionic contact manifold

DOI10.1007/s12220-022-01072-1zbMath1520.53038arXiv2012.15767WikidataQ115229536 ScholiaQ115229536MaRDI QIDQ6357325

Dimiter Vassilev, Abdelrahman Mohamed

Publication date: 31 December 2020

Mathematics Subject Classification ID

Spectral problems; spectral geometry; scattering theory on manifolds (58J50) Special Riemannian manifolds (Einstein, Sasakian, etc.) (53C25) Contact manifolds (general theory) (53D10) Sub-Riemannian geometry (53C17)