Bourbaki

Exercice 19, § 6

Tag 02VW, permanent. Cite it as [Bourbaki, Tag 02VW].

Théories spectrales, III, p. 136

Soit A une matrice carrée réelle de type (I,I)(I,I), positive et irréductible ; soit ϱ\varrho son rayon spectral. Soit z∈RIz\in \mathbf{R}^I tel que z≽0z\succcurlyeq 0 et z≠0z\not = 0.

Si ϱz≼Az\varrho z\preccurlyeq Az (resp. ϱz≽Az\varrho z\succcurlyeq Az), alors ϱz=Az\varrho z=Az et z≻0z\succ 0.

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