On the estimate of the first eigenvalue of a sublaplacian on a pseudohermitian 3-manifold

SHU-CHENG CHANGChiu, H.-L.H.-L.Chiu2018-09-102018-09-102007http://www.scopus.com/inward/record.url?eid=2-s2.0-70349767967&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/329546On the estimate of the first eigenvalue of a sublaplacian on a pseudohermitian 3-manifoldjournal article10.2140/pjm.2007.232.2692-s2.0-70349767967WOS:000251564200003