Spectral gap in random bipartite biregular graphs and applications
Probability
2023-06-22 v6 Spectral Theory
Data Analysis, Statistics and Probability
Abstract
We prove an analogue of Alon's spectral gap conjecture for random bipartite, biregular graphs. We use the Ihara-Bass formula to connect the non-backtracking spectrum to that of the adjacency matrix, employing the moment method to show there exists a spectral gap for the non-backtracking matrix. A byproduct of our main theorem is that random rectangular zero-one matrices with fixed row and column sums are full-rank with high probability. Finally, we illustrate applications to community detection, coding theory, and deterministic matrix completion.
Cite
@article{arxiv.1804.07808,
title = {Spectral gap in random bipartite biregular graphs and applications},
author = {Gerandy Brito and Ioana Dumitriu and Kameron Decker Harris},
journal= {arXiv preprint arXiv:1804.07808},
year = {2023}
}
Comments
Small changes to the paper