Let Hn（p,q） be a tree obtained from two stars K1,p and K1,q by identifying the center of K1,p with one end of a path Pn and the center of K1,q with the other end of Pn.We call Hn（p,p-1） a double quasi-star tree.In...Let Hn（p,q） be a tree obtained from two stars K1,p and K1,q by identifying the center of K1,p with one end of a path Pn and the center of K1,q with the other end of Pn.We call Hn（p,p-1） a double quasi-star tree.In this paper,we show that a double quasi-star tree is determined by its Laplacian spectrum.展开更多
This paper is conceraing with the estimate of the first eigenvalue of hyper surface embedded in a compact manifolds with positive ined curvature.It leads to an upper bound of area of compact Riemannian surface embedde...This paper is conceraing with the estimate of the first eigenvalue of hyper surface embedded in a compact manifolds with positive ined curvature.It leads to an upper bound of area of compact Riemannian surface embedded in S3. Secondly,spectral isomorphic problem is discussed.展开更多
We consider the FuAcˇik spectrum of p-Laplacian equation -Δpu=αa（x）（u+）p-1+(βa（x）（u-）p-1 x)∈Ω,u=0,x∈Ω in Ω,u=0 on Ω,where Ω is a bounded smooth domain in RN（N≥1） with boundray Ω.We app...We consider the FuAcˇik spectrum of p-Laplacian equation -Δpu=αa（x）（u+）p-1+(βa（x）（u-）p-1 x)∈Ω,u=0,x∈Ω in Ω,u=0 on Ω,where Ω is a bounded smooth domain in RN（N≥1） with boundray Ω.We apply a variant of mountain-pass above equation.Furthermore,we also get a nontrivial solution of a nonresonance problem.展开更多
基金Project supported by the Natural Science Foundation of Gausu Province (Grant Nos.3Z5051-A25-037, 0809RJZA017)the National Natural Science Foundation of China (Grant No.50877034)the Foundation of Lanzhou University of Technology(Grant No.0914ZX136)
文摘Let Hn（p,q） be a tree obtained from two stars K1,p and K1,q by identifying the center of K1,p with one end of a path Pn and the center of K1,q with the other end of Pn.We call Hn（p,p-1） a double quasi-star tree.In this paper,we show that a double quasi-star tree is determined by its Laplacian spectrum.
文摘This paper is conceraing with the estimate of the first eigenvalue of hyper surface embedded in a compact manifolds with positive ined curvature.It leads to an upper bound of area of compact Riemannian surface embedded in S3. Secondly,spectral isomorphic problem is discussed.
文摘We consider the FuAcˇik spectrum of p-Laplacian equation -Δpu=αa（x）（u+）p-1+(βa（x）（u-）p-1 x)∈Ω,u=0,x∈Ω in Ω,u=0 on Ω,where Ω is a bounded smooth domain in RN（N≥1） with boundray Ω.We apply a variant of mountain-pass above equation.Furthermore,we also get a nontrivial solution of a nonresonance problem.
