2 papers
math.PR2025
Gaps between Singular Values of Sample Covariance Matrices
Nicholas Christoffersen, Kyle Luh, Sean O'Rourke +1
We study the gaps between consecutive singular values of random rectangular matrices. Specifically, if is an random matrix with independent and identically distrib…
math.PR2025
Eigenvalue gaps of the Laplacian of random graphs
Nicholas Christoffersen, Kyle Luh, Hoi H. Nguyen +1
We show that, with very high probability, the random graph Laplacian has simple spectrum. Our method provides a quantitatively effective estimate of the spectral gaps. Along the wa…