Lectures on Pseudo-Differential Operators: Regularity Theorems and Applications to Non-Elliptic Problems
暫譯: 偽微分算子講座：正則性定理及其在非橢圓問題中的應用

The theory of pseudo-differential operators (which originated as singular integral operators) was largely influenced by its application to function theory in one complex variable and regularity properties of solutions of elliptic partial differential equations. Given here is an exposition of some new classes of pseudo-differential operators relevant to several complex variables and certain non-elliptic problems.

Originally published in 1979.

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