Birkhoff normal forms for Fourier integral operators II

J. Sjöstrand, A. Iantchenko

Research output: Contribution to journalArticlepeer-review

16 Citations (SciVal)


We consider the problem of constructing a microlocal logarithm and a normal form for an elliptic semi-classical Fourier integral operator near a fixed point of the corresponding canonical transformation. In [Ia] the canonical transformation was assumed to be of real hyperbolic type. In [IS] this assumption was relaxed considerably, to what we think are the natural conditions.
Original languageEnglish
Pages (from-to)817-850
Number of pages34
JournalAmerican Journal of Mathematics
Issue number4
Publication statusPublished - Nov 2001


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