# Finding a Bounded-Degree Expander Inside a Dense One

26 Nov 2018 Luca Becchetti Andrea Clementi Emanuele Natale Francesco Pasquale Luca Trevisan

It follows from the Marcus-Spielman-Srivastava proof of the Kadison-Singer conjecture that if $G=(V,E)$ is a $\Delta$-regular dense expander then there is an edge-induced subgraph $H=(V,E_H)$ of $G$ of constant maximum degree which is also an expander. As with other consequences of the MSS theorem, it is not clear how one would explicitly construct such a subgraph... (read more)

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• DISTRIBUTED, PARALLEL, AND CLUSTER COMPUTING