Constructing regular maps and graphs from planar quotients
Stanislav Jendroľ, Roman Nedela, Martin Škoviera (1997)
Mathematica Slovaca
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Stanislav Jendroľ, Roman Nedela, Martin Škoviera (1997)
Mathematica Slovaca
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Luigi Grasselli (1987)
Disertaciones Matemáticas del Seminario de Matemáticas Fundamentales
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Robert Brooks (1999)
Annales de l'institut Fourier
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We consider the question of whether there is a converse to the Sunada Theorem in the context of -regular graphs. We give a weak converse to the Sunada Theorem, which gives a necessary and sufficient condition for two graphs to be isospectral in terms of a Sunada-like condition, and show by example that a strong converse does not hold.
Roman Nedela (1997)
Mathematica Slovaca
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