It can be shown that a nonnegative n n matrix is irreducible if and only if (I A) n1 O
Chapter 4, Problem 4.6.32(choose chapter or problem)
It can be shown that a nonnegative n n matrix is irreducible if and only if (I A) n1 O. In Exercises 3235, use this criterion to determine whether the matrix A is irreducible. If A is reducible, find a permutation of its rows and columns that puts A into the block form
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