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Elementary proofs of analytic hypoellipticity for a wave operator and the (partial d)–Neumann problem. (English) Zbl 0497.35023

Astérisque 89-90, 85-116 (1981).
For the entire collection see [Zbl 0481.00013].

MSC:

35H10 Hypoelliptic equations
35N15 \(\overline\partial\)-Neumann problems and formal complexes in context of PDEs
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