Helffer, B.; Nourrigat, J. Caractérisation des opérateurs hypoelliptiques homogenes invariants à gauche sur un groupe de Lie nilpotent gradue. (French) Zbl 0423.35040 Commun. Partial Differ. Equations 4, 899-958 (1979). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 12 ReviewsCited in 82 Documents MSC: 35H10 Hypoelliptic equations 22E25 Nilpotent and solvable Lie groups Keywords:Lie algebra; hypoelliptic operators Citations:Zbl 0326.22007; Zbl 0359.43006; Zbl 0385.35015; Zbl 0346.35030 PDF BibTeX XML Cite \textit{B. Helffer} and \textit{J. Nourrigat}, Commun. Partial Differ. Equations 4, 899--958 (1979; Zbl 0423.35040) Full Text: DOI OpenURL References: [1] Beals R., Exposé aux journles E.D.P. de St jean de Monts [2] Helffer B., Hypoellipticit6 pour des op6rateurs diffgrentiels surles groupes de Lie nilpotents (1977) [3] Helffer B., S6minaire Goulaouic-Schwartz pp 77– [4] Helffer A ., in p.d.e. 3 (1978) [5] Kirillov A.A., Hat. Nauk. 17 pp 57– (1962) [6] Lion G. en prgparation [7] Pukanszky L. Lefons sur les representations des groupes 1967 Dunod [8] Rockland C., Trans. of the A.y.S 240 pp 1– (1978) [9] Rothschild L. P., Acta Mathenatica 137 pp 248– [10] Vergne M., C.R. Acad. Sc. 270, (1970) 270 pp 173– (1970) 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. It attempts to reflect the references listed in the original paper as accurately as possible without claiming the completeness or perfect precision of the matching.