@article{an-eigenvalue-bound-for-the-fractional-chromatic-number,
  title = {{Two chromatic numbers, eigenvalues and a generalized Lovász theta}},
  author = {MK Silva and G Coutinho and R Grandsire},
  year = {2026},
  journal = {Special Matrices 14(1), 20250060 (2026)},
  doi = {10.1515/spma-2025-0060},
  eprint = {2106.11121},
  archivePrefix = {arXiv},
  url = {https://doi.org/10.1515/spma-2025-0060}
}