Birkhoff normal forms for Fourier integral operators II
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🧮 math.SP
math-phmath.MP
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birkhoffformsfourierintegralnormaloperatorsworkaprevious
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In this work we construct logarithms and Birkhoff normal forms for elliptic Fourier integral operators in the semi-classical limit under more general assumptions than in aprevious work by the first author. The methods are similar but slightly different.
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