Isomorphisms between Algebras of Semiclassical Pseudodifferential Operators

Details Isomorphisms between Algebras of Semiclassical Pseudodifferential Operators Isomorphisms between Algebras of Semiclassical Pseudodifferential Operators

2008-03-05

arxiv.org/abs/0803.0729v1

Mathematics

Analysis of PDEs

Scientific paper

Following the work of Duistermaat-Singer \cite{DS} on isomorphisms of algebras of global pseudodifferential operators, we classify isomorphisms of algebras of microlocally defined semiclassical pseudodifferential operators. Specifically, we show that any such isomorphism is given by conjugation by $A = BF$, where $B$ is a microlocally elliptic semiclassical pseudodifferential operator, and $F$ is a microlocal $h$-FIO associated to the graph of a local symplectic transformation.

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