paper

Eigenvalue ratios of nonnegatively curved graphs

arXiv:1406.6617 · doi:10.1017/S0963548318000214

Abstract

We derive an optimal eigenvalue ratio estimate for finite weighted graphs satisfying the curvature-dimension inequality . This estimate is independent of the size of the graph and provides a general method to obtain higher order spectral estimates. The operation of taking Cartesian products is shown to be an efficient way for constructing new weighted graphs satisfying . We also discuss a higher order Cheeger constant ratio estimate and related topics about expanders.

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