【摘要】 <正> 设Ω是R~m(m≥2)中的有界区域,Ω具有光滑边界(?)Ω。设P_k(x)是具非负常系数且首项系数为1的单变量k次多项式,表示为更多还原

【Abstract】 We consider the eigenvalue problem of selfadjoint operators P_k(-△) with Dirichlet boundary data,where P_k(x) is a polynomial of degree k having nonnegative real coetficients,and obtain several estimates on consecutive eigenvalues.更多还原