Abstract
In this note we prove in the nonlinear setting of \({{\mathrm{CD}}}(K,\infty )\) spaces the stability of the Krasnoselskii spectrum of the Laplace operator \(-\,\Delta \) under measured Gromov–Hausdorff convergence, under an additional compactness assumption satisfied, for instance, by sequences of \({{\mathrm{CD}}}^*(K,N)\) metric measure spaces with uniformly bounded diameter. Additionally, we show that every element \(\lambda \) in the Krasnoselskii spectrum is indeed an eigenvalue, namely there exists a nontrivial u satisfying the eigenvalue equation \(-\, \Delta u = \lambda u\).
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The first author acknowledges the support of the MIUR PRIN 2015 grant. The second author acknowledges the support of the JSPS Program for Advancing Strategic International Networks to Accelerate the Circulation of Talented Researchers, the Grantin-Aid for Young Scientists (B) 16K17585 and the warm hospitality of SNS. The third author thanks Mark Peletier, Georg Prokert and Oliver Tse for helpful discussions and the SNS for its hospitality.
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Ambrosio, L., Honda, S. & Portegies, J.W. Continuity of nonlinear eigenvalues in \({{\mathrm{CD}}}(K,\infty )\) spaces with respect to measured Gromov–Hausdorff convergence. Calc. Var. 57, 34 (2018). https://doi.org/10.1007/s00526-018-1315-0
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DOI: https://doi.org/10.1007/s00526-018-1315-0