简介：LetΩ∪→R^m(m≥1)beaboundeddomainwithpiecewisesmoothboundaryρ↓Ω.Lettandrbepositiveintegerswitht>r+1.Weconsidertheeigenvalueproblems(1.1)and(1.2),andobtainTheorem1andTheorem2,whichgeneralizetheresultsin[1,2,5].
On the Upper Bound of Second Eigenvalues for Uniformly Elliptic Operators of any Orders
