2 papers
math.CA2025
Bounds for weighted Chebyshev and residual polynomials on subsets of
Jacob S. Christiansen, Barry Simon, Maxim Zinchenko
We give upper and lower bounds for weighted Chebyshev and residual polynomials on subsets of the real line. As an application, we prove a SzegÅ-type theorem in the setting of Parr…
math.NA2024
A geometric approach to approximating the limit set of eigenvalues for banded Toeplitz matrices
Teodor Bucht, Jacob S. Christiansen
This article is about finding the limit set for banded Toeplitz matrices. Our main result is a new approach to approximate the limit set where is the symbol of the band…