@Article{JPDE-15-28, author = {Yazhou Han , Pengcheng Niu and Xuebo Luo }, title = {A Hardy Type Inequality and Inde Nite Eigenvalue Problems on the Homogeneous Group}, journal = {Journal of Partial Differential Equations}, year = {2002}, volume = {15}, number = {4}, pages = {28--38}, abstract = { In this paper we present a Hardy type inequality and a Picone type identity for the real sub-Laplacian on the homogeneous group. The existence of the indefinite eigenvalue problem and the simplicity of the principal eigenvalue are proved.}, issn = {2079-732X}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/jpde/5459.html} }