Mathematics – Differential Geometry
Scientific paper
2011-12-13
Mathematics
Differential Geometry
15 pages
Scientific paper
In this paper, we investigate the Dirchlet eigenvalue problems of
poly-Laplacian with any order and quadratic polynomial operator of the
Laplacian. We give some estimates for lower bounds of the sums of their first
$k$ eigenvalues which improve the previous results.
Cheng Qing-Ming
Sun He-Jun
Wei Guoxin
Zeng Lingzhong
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