The paper asserts jellyfish graphs are determined by Laplacian and signless Laplacian spectra, but the Laplacian proof uses a false spectral radius bound and the signless proof has an unproved step.
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math.CO 1years
2019 1verdicts
REJECT 1representative citing papers
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No two Jellyfish graphs are L-cospectral and Q-cospectral
The paper asserts jellyfish graphs are determined by Laplacian and signless Laplacian spectra, but the Laplacian proof uses a false spectral radius bound and the signless proof has an unproved step.