Sublinear expanders and their applications

Autor: Letzter, Shoham
Rok vydání: 2024
Předmět:
Druh dokumentu: Working Paper
Popis: In this survey we aim to give a comprehensive overview of results using sublinear expanders. The term sublinear expanders refers to a variety of definitions of expanders, which typically are defined to be graphs $G$ such that every not-too-small and not-too-large set of vertices $U$ has neighbourhood of size at least $\alpha |U|$, where $\alpha$ is a function of $n$ and $|U|$. This is in contrast with linear expanders, where $\alpha$ is typically a constant. :We will briefly describe proof ideas of some of the results mentioned here, as well as related open problems.
Comment: 39 pages, 15 figures. This survey will appear in `Surveys in Combinatorics 2024' (the proceedings of the 30th British Combinatorial Conference)
Databáze: arXiv