Using the fact that the column sums of an exchange matrixE are all 1, show that the
Chapter 10, Problem 7(choose chapter or problem)
Using the fact that the column sums of an exchange matrixE are all 1, show that the column sums of I E are zero. From this, show that I E has zero determinant, and so (I E)p = 0 has nontrivial solutions for p.
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