Some aspects of differential geometry associated with hypoelliptic second order operators

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6 Scopus citations


I investigate some aspects of the geometry of the bicharacteristics of a class of hypoelliptic second order partial differential operators. The resulting geometry looks quite a bit like Riemannian geometry, although with interesting differences.

Original languageEnglish (US)
Pages (from-to)355-378
Number of pages24
JournalPacific Journal of Mathematics
Issue number2
StatePublished - 1989


ASJC Scopus subject areas

  • Mathematics(all)

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