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On two variable equations in free groups. (English) Zbl 0172.02701

group theory
Full Text: DOI
[1] Marvin Marcus and Henryk Minc, A survey of matrix theory and matrix inequalities, Allyn and Bacon, Inc., Boston, Mass., 1964. · Zbl 0247.15002
[2] Richard Sinkhorn and Paul Knopp, Problems involving diagonal products in nonnegative matrices, Trans. Amer. Math. Soc. 136 (1969), 67 – 75. · Zbl 0175.02404
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