The Pseudo-Differential Operator Technique
The pseudo-differential operator theory emerged from the theory of singular integrals and Fourier analysis, having Kohn and Nirenberg as initiators. The theory was later extended and developed by Hörmander and has become an important tool in the theory of modern PDEs.
KeywordsFundamental Solution Hermite Operator Symbolic Calculus Degenerate Operator Weyl Symbol
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