For an irreducible stochastic matrix T, we consider a certain condition number c(T), which measures the stability of the corresponding stationary distribution when T is perturbed. We characterize the strongly connected directed graphs D such that c(T) is bounded as T ranges over T-D, the set of stochastic matrices whose directed graph is contained in D. For those digraphs D for which c(T) is bounded, we find the maximum value of c(T) as T ranges over T-D. (C) 2003 Elsevier Inc. All rights reserved.
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页码:81 / 93
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Brualdi R. A., 1991, COMBINATORIAL MATRIX, V39