2 papers
math.PR2026
Structured perturbations of tridiagonal twisted Toeplitz matrices
Dario Giandinoto, Boris Shapiro
Twisted Toeplitz matrices constitute a generalization of Toeplitz matrices in the sense that the entries on each diagonal no longer need to be constant, but are given by the values…
math.SP2024
On reality of eigenvalues of banded block Toeplitz matrices
Dario Giandinoto
We formulate and partially prove a general conjecture providing necessary and sufficient conditions for the reality of the asymptotic spectrum of an arbitrary real banded block Toe…