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Marchenko-Ostrovski mappings for periodic Jacobi matrices
Evgeny Korotyaev, Anton Kutsenko
We consider the 1D periodic Jacobi matrices. The spectrum of this operator is purely absolutely continuous and consists of intervals separated by gaps. We solve the inverse problem…
math.SP2007
Lyapunov functions for periodic matrix-valued Jacobi operators
Evgeny Korotyaev, Anton Kutsenko
We consider periodic matrix-valued Jacobi operators. The spectrum of this operator is absolutely continuous and consists of intervals separated by gaps. We define the Lyapunov func…