The rank of random regular digraphs of constant degree

Alexander E. Litvak, Anna Lytova, Konstantin Tikhomirov, Nicole Tomczak-Jaegermann, Pierre Youssef

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Let d be a (large) integer. Given n≥2d, let An be the adjacency matrix of a random directed d-regular graph on n vertices, with the uniform distribution. We show that the rank of An is at least n−1 with probability going to one as n grows to infinity. The proof combines the well known method of simple switchings and a recent result of the authors on delocalization of eigenvectors of An.

Original languageEnglish (US)
Pages (from-to)103-110
Number of pages8
JournalJournal of Complexity
StatePublished - Oct 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Algebra and Number Theory
  • Statistics and Probability
  • Numerical Analysis
  • General Mathematics
  • Control and Optimization
  • Applied Mathematics


  • Random matrices
  • Random regular graphs
  • Rank
  • Singularity probability


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