00-22 B. Grebert, T. Kappeler
Estimates on periodic and Dirichlet eigenvalues for the Zakharov-Shabat system (113K, latex) Jan 17, 00
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Abstract. We prove new estimates on periodic and Dirichlet eigenvalues for the Zakharov-Shabat system with complex periodic potentials. Our method allows us to characterize in a precise way the decreasing properties of the gap length sequence in terms of regularity of complex potentials in weighted Sobolev spaces.

Files: 00-22.src( 00-22.keywords , gap2.tex )