Mathematics – Spectral Theory
Scientific paper
2004-02-11
Mathematics
Spectral Theory
Scientific paper
We prove an approximate spectral theorem for non-self-adjoint operators and
investigate its applications to second order differential operators in the
semi-classical limit. This leads to the construction of a twisted FBI
transform. We also investigate the connections between pseudospectra and
boundary conditions in the semi-classical limit.
Davies Brian E.
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