Strong cospectrality in trees
arXiv:2206.02995
Abstract
We prove that no tree contains a set of three vertices which are pairwise strongly cospectral. This answers a question raised by Godsil and Smith in 2017.
arXiv comment13 pages
arXiv:2206.02995
We prove that no tree contains a set of three vertices which are pairwise strongly cospectral. This answers a question raised by Godsil and Smith in 2017.
arXiv comment13 pages