In this article, we analyze the existence, multiplicity and nonexistence of positive solutions for a class of biharmonic equations with Navier boundary conditions and a parameter. In addition, some new criteria for the existence, multiplicity and nonexistence of positive radial solutions for a singular biharmonic equation are also investigated. Our approaches use fixed point theorems on cones.
机构:
N Carolina State Univ, Coll Phys & Math Sci, Dept Math, Raleigh, NC 27695 USAN Carolina State Univ, Coll Phys & Math Sci, Dept Math, Raleigh, NC 27695 USA
机构:
North China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R ChinaNorth China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R China
机构:
N Carolina State Univ, Coll Phys & Math Sci, Dept Math, Raleigh, NC 27695 USAN Carolina State Univ, Coll Phys & Math Sci, Dept Math, Raleigh, NC 27695 USA
机构:
North China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R ChinaNorth China Elect Power Univ, Sch Math & Phys, Beijing 102206, Peoples R China