Geodesic
On weakly cospectral graphs
Matematičeskie zametki, Tome 80 (2006) no. 4, pp. 627-629 
S. P. Strunkov. On weakly cospectral graphs. Matematičeskie zametki, Tome 80 (2006) no. 4, pp. 627-629. http://geodesic.mathdoc.fr/item/MZM_2006_80_4_a15/
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     author = {S. P. Strunkov},
     title = {On weakly cospectral graphs},
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     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_80_4_a15/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We prove that any set of pair-wise nonisomorphic strongly connected weakly cospectral pseudodigraphs whose set of nilpotency indices is finite also is finite.

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