Mathematics – Combinatorics
Scientific paper
2012-03-12
Mathematics
Combinatorics
Scientific paper
In this paper, we determine an explicit formula for the number of walks in
$X_n = \textsf{Cay}(\mathbb{Z}_n,\mathbb{U}_n)$, the unitary Cayley Graphs of
order $n$, between any pair of its vertices. With this result, we give the
number of representations of a fixed residue class $\bmod{}n$ as the sum of $k$
units of $\mathbb{Z}_n$.
Cancela Elias
Jaume Daniel A.
Pastine Adrián
Videla Denis
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