Sudoku Graphs are Integral
Sudoku graphs have only 5 or 6 distinct eigenvalues and all of them are integers. Moreover, the associated eigenspaces admit bases with entries from the set $\{0, 1, -1\}$.
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| Veröffentlicht in: | The Electronic journal of combinatorics 2009-07, Vol.16 (1) |
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| 1. Verfasser: | |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Sudoku graphs have only 5 or 6 distinct eigenvalues and all of them are integers. Moreover, the associated eigenspaces admit bases with entries from the set $\{0, 1, -1\}$. |
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| ISSN: | 1077-8926 1077-8926 |
| DOI: | 10.37236/263 |