TY - JOUR T1 - Existence Results for the Positive Solutions of a Fourth Order Nonlinear Equations on the Heisenberg Group JO - Journal of Partial Differential Equations VL - 2 SP - 123 EP - 132 PY - 2000 DA - 2000/05 SN - 13 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jpde/5501.html KW - Heisenberg group KW - nonlinear problem KW - sobelliptic equation KW - existence KW - degree KW - vector AB - In this paper, we give some existence results for a fourth order nonlinear subelliptic equations on the Heisenberg group by the Leray-Schauder degree.