Title
Walking on the Edge and Cosystolic Expansion.
Abstract
Random walks on regular bounded degree expander graphs have numerous applications. A key property of these walks is that they converge rapidly to the uniform distribution on the vertices. The recent study of expansion of high dimensional simplicial complexes, which are the high dimensional analogues of graphs, calls for the natural generalization of random walks to higher dimensions. In particular, a high order random walk on a $2$-dimensional simplicial complex moves at random between neighboring edges of the complex, where two edges are considered neighbors if they share a common triangle. We show that if a regular $2$-dimensional simplicial complex is a cosystolic expander and the underlying graph of the complex has a spectral gap larger than $1/2$, then the random walk on the edges of the complex converges rapidly to the uniform distribution on the edges.
Year
Venue
Field
2016
arXiv: Computational Complexity
Random regular graph,Discrete mathematics,Combinatorics,Expander graph,Random graph,Vertex (geometry),Random walk,Simplicial complex,Spectral gap,Mathematics,Bounded function
DocType
Volume
Citations 
Journal
abs/1606.01844
1
PageRank 
References 
Authors
0.44
5
2
Name
Order
Citations
PageRank
Tali Kaufman149938.33
David Mass252.97