Dimension-dependent bounds for the SDIEP via phase optimisation and Paley-type constructions

Tomasz Kania

We refine the cycle-walk (Fourier) template of Gnacik and the author to quantify when a~$\delta$-Sule\uımanova spectrum $(1,{\lambda }_2,\dots ,{\lambda }_n)$ (with ${\lambda }_j\le 0$) is realised by a symmetric…