On the Hörmander classes of bilinear pseudodifferential operators

Details On the Hörmander classes of bilinear pseudodifferential operators On the Hörmander classes of bilinear pseudodifferential operators

2009-09-25

arxiv.org/abs/0909.4734v2

Mathematics

Classical Analysis and ODEs

To appear in Integral Equations and Operator Theory

Scientific paper

Bilinear pseudodifferential operators with symbols in the bilinear analog of all the H\"ormander classes are considered and the possibility of a symbolic calculus for the transposes of the operators in such classes is investigated. Precise results about which classes are closed under transposition and can be characterized in terms of asymptotic expansions are presented. This work extends the results for more limited classes studied before in the literature and, hence, allows the use of the symbolic calculus (when it exists) as an alternative way to recover the boundedness on products of Lebesgue spaces for the classes that yield operators with bilinear Calder\'on-Zygmund kernels. Some boundedness properties for other classes with estimates in the form of Leibniz' rule are presented as well.

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