Exploració per tema "local spectrum"
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On k-Walk-Regular Graphs
(2008-08)
Article
Accés obertConsidering a connected graph $G$ with diameter $D$, we say that it is \emph{$k$-walk-regular}, for a given integer $k$ $(0\leq k \leq D)$, if the number of walks of length $\ell$ between vertices $u$ and $v$ only depends ... -
The geometry of t-spreads in k-walk-regular graphs
(Wiley InterScience, 2010-08)
Article
Accés obertA graph is walk-regular if the number of closed walks of length rooted at a given vertex is a constant through all the vertices for all . For a walk-regular graph G with d+1 different eigenvalues and spectrally maximum ...