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MAS 801 It's a Discreetly Discrete World – Mathematics in Real-life ...

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Lecture 9: 22 October 2008<br />

Adjacency Matrix of a Digraph<br />

Adjacency Matrix<br />

• Given a digraph G with n vertices, its adjacency matrix is the n x n<br />

matrix A whose entry <strong>in</strong> row i and column j is given by<br />

aij =<br />

{ 1,<br />

if (i, j) is an arc of G<br />

0, otherwise

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