Rendiconti di Matematica e delle sue Applicazioni
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ISSN 1120-7183 (print)
ISSN 2532-3350 (online) |
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Volume 43 (4) (2022)
Abstract. We provide complementary semiclassical bounds for the Riesz means R1(z) of the eigenvalues of various biharmonic operators, with a second term in the expected power of z. The method we discuss makes use of the averaged variational principle (AVP), and yields two-sided bounds for individual eigenvalues, which are semiclassically sharp. The AVP also yields comparisons with Riesz means of different operators, in particular Laplacians. Rend. Mat. Appl. (7) 43 (2022) 267-314; pdf |