Menikoff, A.; Sjöstrand, J. The eigenvalues of hypoelliptic operators. III: The non-semibounded case. (English) Zbl 0436.35065 J. Anal. Math. 35, 123-150 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 9 Documents MSC: 35P20 Asymptotic distributions of eigenvalues in context of PDEs 35S99 Pseudodifferential operators and other generalizations of partial differential operators 65H10 Numerical computation of solutions to systems of equations 58J40 Pseudodifferential and Fourier integral operators on manifolds Keywords:eigenvalues; hypoelliptic operators; non-semibounded case; pseudo- differential operator Citations:Zbl 0417.47024; Zbl 0375.35014; Zbl 0388.47033 × Cite Format Result Cite Review PDF Full Text: DOI References: [1] Hörmander, L., A class of hypoelliptic pseudo-differential operators with double characteristics, Math. Ann., 217, 165-188 (1975) · Zbl 0306.35032 · doi:10.1007/BF01351297 [2] Melin, A., Lower bounds for pseudo-differential operators, Ark. Mat., 9, 117-140 (1971) · Zbl 0211.17102 · doi:10.1007/BF02383640 [3] Menikoff, A.; Sjöstrand, J., On the eigenvalues of a class of hypoelliptic operators, Math. Ann., 235, 55-85 (1978) · Zbl 0375.35014 · doi:10.1007/BF01421593 [4] A. Menikoff and J. Sjöstrand,On the eigenvalues of a class of hypoelliptic operators II, to appear in Springer Lecture Notes. · Zbl 0444.35019 [5] J. Sjöstrand, in preparation; see also Proc. Internat. Congress of Math., Helsinki, 1978. This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.