In this paper, we investigate non-zero positive eigenvalues of the Laplacian with Dirichlet boundary condition in an n-dimentional Euclidean space R;, then we obtain an new upper bound of the(k +1)-th eigenvalue λ;, which improve the previous estimate which was obtained by Cheng and Yang, see(1.8).
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Univ Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, PortugalUniv Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, Portugal
Andrade, Enide
Cardoso, Domingos M.
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Univ Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, PortugalUniv Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, Portugal
Cardoso, Domingos M.
Robbiano, Maria
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Univ Catolica Norte, Dept Matemat, Antofagasta, ChileUniv Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, Portugal
Robbiano, Maria
Rodriguez, Jonnathan
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Univ Catolica Norte, Dept Matemat, Antofagasta, ChileUniv Aveiro, Dept Matemat, CIDMA Ctr Res & Dev Math & Applicat, P-3810193 Aveiro, Portugal