Séminaire Lotharingien de Combinatoire, B11o (1984), 5 pp.
[Formerly: Publ. I.R.M.A. Strasbourg, 1985, 266/S-11, p.
122-126.]
Karl Erich Wolff
Punkt-stabile Inzidenzstrukturen und stochastische Matrizen
Abstract.
We show that the projection matrices that appear in Hoffman's theorem
(on point-stable incidence structures) and in the ergodic theorem
are the matrices of the "kernel projection" on the eigenspace
of the Perron-Frobenius eigenvalue.
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