Spectral gaps of 1-D Robin Schrödinger operators with single-well potentials von Ashbaugh, Mark S., Kielty, Derek

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Shape optimization and spectral theory von Henrot, Antoine

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A unified approach to universal inequalities for eigenvalues of elliptic operators von ASHBAUGH, Mark S, HERMI, Lotfi

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The universal eigenvalue bounds of Payne-Pólya-Weinberger, Hile-Protter, and H C Yang von Ashbaugh, Mark S.

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ON EXTENDING THE INEQUALITIES OF PAYNE, PÓLYA, AND WEINBERGER USING SPHERICAL HARMONICS von ASHBAUGH, MARK S., HERMI, LOTFI

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On the isoperimetric inequality for the buckling of a clamped plate von Ashbaugh, S., Bucur, Dorin

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A second proof of the Payne-Pólya-Weinberger conjecture von ASHBAUGH, M. S, BENGURIA, R. D

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Spectral theory for perturbed Krein Laplacians in nonsmooth domains von Ashbaugh, Mark S., Gesztesy, Fritz, Mitrea, Marius, Teschl, Gerald

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A bound for the eigenvalue counting function for Krein–von Neumann and Friedrichs extensions von Ashbaugh, Mark S., Gesztesy, Fritz, Laptev, Ari, Mitrea, Marius, Sukhtaiev, Selim

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On low eigenvalues of the Laplacian with mixed boundary conditions von Ashbaugh, Mark S., Chiacchio, Francesco

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Universal Inequalities for the Eigenvalues of the Dirichlet Laplacian von Henrot, Antoine

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Universal bounds for the low eigenvalues of Neumann Laplacians in N dimensions von ASHBAUGH, M. S, BENGURIA, R. D

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Rebuttal of Donnelly’s paper on the spectral gap von Ashbaugh, Mark S., Henrot, Antoine, Laugesen, Richard S.

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More bounds on eigenvalue ratios for Dirichlet Laplacians in N dimensions von ASHBAUGH, M. S, BENGURIA, R. D

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The Krein-von Neumann extension and its connection to an abstract buckling problem von Ashbaugh, Mark S., Gesztesy, Fritz, Mitrea, Marius, Shterenberg, Roman, Teschl, Gerald

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Spectral gaps of 1-D Robin Schr\"odinger operators with single-well potentials von Ashbaugh, Mark S, Kielty, Derek

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Optimal bounds for ratios of eigenvalues of one-dimensional Schrödinger operators with dirichlet boundary conditions and positive potentials von ASHBAUGH, M. S, BENGURIA, R. D

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Optimization of the characteristic values of Hill's equation subject to a p-norm constraint on the potential von Ashbaugh, Mark S

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A Survey on the Krein–von Neumann Extension, the Corresponding Abstract Buckling Problem, and Weyl-type Spectral Asymptotics for Perturbed Krein Laplacians in Nonsmooth Domains von Ashbaugh, Mark S., Gesztesy, Fritz, Mitrea, Marius, Shterenberg, Roman, Teschl, Gerald

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A Sharp Bound for the Ratio of the First Two Eigenvalues of Dirichlet Laplacians and Extensions von Ashbaugh, Mark S., Benguria, Rafael D.

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