Super-expanders and warped cones

نویسندگان

چکیده

For a Banach space $X$, we show that any family of graphs quasi-isometric to levels warped cone $\mathcal O_\Gamma Y$ is an expander with respect $X$ if and only the induced $\Gamma$-representation on $L^2(Y;X)$ has spectral gap. This provides examples are all spaces non-trivial type.

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ژورنال

عنوان ژورنال: Annales de l'Institut Fourier

سال: 2021

ISSN: ['0373-0956', '1777-5310']

DOI: https://doi.org/10.5802/aif.3373