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Subelliptic eigenvalue problems. (English) Zbl 0503.35071

Harmonic analysis, Conf. in Honor A. Zygmund, Chicago 1981, Vol. 2, 590-606 (1983).

MSC:

35P20 Asymptotic distributions of eigenvalues in context of PDEs
35H20 Subelliptic equations
35J15 Second-order elliptic equations
58J10 Differential complexes

Citations:

Zbl 0493.00009