Upper Hessenberg and Toeplitz Bohemian matrix sequences: a note on their asymptotical eigenvalues and singular values

In previous works, Bohemian matrices have attracted the attention of several researchers for theirrich combinatorial structure, and they have been studied intensively from several points of view, including height,determinants, characteristic polynomials, normality, and stability. Here we consider a selected number of examples ofupper Hessenberg and Toeplitz Bohemian matrix sequences whose entries belong to the population P = {0, ±1},and we propose a connection with the spectral theory of Toeplitz matrix sequences and Generalized Locally Toeplitz(GLT) matrix sequences in order to give results on the localization and asymptotical distribution of their spectra andsingular values. Numerical experiments that support the mathematical study are reported. A conclusion section endsthe note in order to illustrate the applicability of the proposed tools to more general cases