English

A very short note on a problem of Godsil and Sun

Combinatorics 2025-10-07 v1

Abstract

Using the spectral theorem for symmetric matrices over a real closed field, we give a quick answer to a problem of Godsil and Sun on degree-similarity of graphs.

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Cite

@article{arxiv.2510.03816,
  title  = {A very short note on a problem of Godsil and Sun},
  author = {Wei Wang},
  journal= {arXiv preprint arXiv:2510.03816},
  year   = {2025}
}

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3pages