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math.NT2008
Christoffel words and Markoff triples
Christophe Reutenauer
Markoff triples are parametrized uniquely by Christoffel words.
math.RA2008
Codes and Noncommutative Stochastic Matrices
Sylvain Lavallée, Christophe Reutenauer, Vladimir Retakh +1
Given a matrix over a skew field fixing the column (1,...,1)^t, we give formulas for a row vector fixed by this matrix. The same techniques are applied to give noncommutative exten…