Rostyslav Kozhan

activity

20092026

most citedMatrix models and eigenvalue statistics for truncations of classical ensembles of random unitary matrices

12 citations · 38 across the 23 of their papers we have counts for

collaborators

Showing 2025Show all

2 papers · 1 filter

math.CA2025

Ratio asymptotics and zero density for orthogonal polynomials with varying Verblunsky coefficients

Rostyslav Kozhan, František Štampach

We study asymptotic behavior of orthogonal polynomials on the unit circle with varying Verblunsky coefficients $α_{n, N}$ when the ratio $n / N$ converges as $n, N \to \infty$ . First, we…

math.CA2025

Zeros of Multiple Orthogonal Polynomials: Location and Interlacing

Rostyslav Kozhan, Marcus Vaktnäs

We prove a criterion on the possible locations of zeros of type I and type II multiple orthogonal polynomials in terms of normality of degree $1$ Christoffel transforms. We provide…