[Estimations asymptotiques uniformes pour le spectre d'un problème scalaire raide]
On obtienent des estimations de la vitesse de convergence des valeurs propres, convenablement mises a l'échelle, d'un problème de Neumann raide pour l'operateur de Laplace. Des bornes correspondantes a ces estimations sont exprimées en termes du rapport des raideurs et des propriétés du spectre limite dans les rangs des fréquences basses et moyennes.
Estimates of convergence rates for rescaled eigenvalues of the stiff Neumann problem for the Laplacian are obtained. The bounds are expressed in terms of the stiffness ratio and properties of the limit spectrum both for low and middle frequency ranges.
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Mots-clés : Acoustique, Ondes, Vibrations, Problème raide, Analyse spectrale, Basses fréquences, Moyennes fréquences
Miguel Lobo 1 ; Serguei A. Nazarov 2 ; Eugenia Pérez 3
@article{CRMECA_2003__331_5_325_0, author = {Miguel Lobo and Serguei A. Nazarov and Eugenia P\'erez}, title = {Asymptotically sharp uniform estimates in a scalar spectral stiff problem}, journal = {Comptes Rendus. M\'ecanique}, pages = {325--330}, publisher = {Elsevier}, volume = {331}, number = {5}, year = {2003}, doi = {10.1016/S1631-0721(03)00073-1}, language = {en}, }
TY - JOUR AU - Miguel Lobo AU - Serguei A. Nazarov AU - Eugenia Pérez TI - Asymptotically sharp uniform estimates in a scalar spectral stiff problem JO - Comptes Rendus. Mécanique PY - 2003 SP - 325 EP - 330 VL - 331 IS - 5 PB - Elsevier DO - 10.1016/S1631-0721(03)00073-1 LA - en ID - CRMECA_2003__331_5_325_0 ER -
Miguel Lobo; Serguei A. Nazarov; Eugenia Pérez. Asymptotically sharp uniform estimates in a scalar spectral stiff problem. Comptes Rendus. Mécanique, Volume 331 (2003) no. 5, pp. 325-330. doi : 10.1016/S1631-0721(03)00073-1. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/S1631-0721(03)00073-1/
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