M - Function Asymptotics and Borg - Type Theorems

نویسندگان

  • Steve Clark
  • Fritz Gesztesy
چکیده

We explicitly determine the high-energy asymptotics for Weyl-Titchmarsh matrices associated with general Dirac-type operators on half-lines and on R. We also prove new local uniqueness results for Dirac-type operators in terms of exponentially small diierences of Weyl-Titchmarsh matrices. As concrete applications of the asymptotic high-energy expansion we derive a trace formula for Dirac operators and use it to prove a Borg-type theorem.

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تاریخ انتشار 2001