Estimates of the Neumann Problem. (MN-19)

The ?? Neumann problem is probably the most important and natural example of a non-elliptic boundary value problem, arising as it does from the Cauchy-Riemann equations. It has been known for some time how to prove solvability and regularity by the use ofL² methods. In this monograph the authors apply recent methods involving the Heisenberg group to obtain parametricies and to give sharp estimates in various function spaces, leading to a better understanding of the ?? Neumann problem. The authors have added substantial background material to make the monograph more accessible to students.

Originally published in 1977.

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