HYPOELLIPTIC OPERATORS WITH MULTIPLE CHARACTERISTICS

• 28 February 1969
• journal article
• Published by Steklov Mathematical Institute in Mathematics of the USSR-Sbornik
• Vol. 8  (2) , 181-205
• https://doi.org/10.1070/sm1969v008n02abeh001116

Abstract

Keywords

• HYPOELLIPTIC OPERATORS WITH MULTIPLE CHARACTERISTICS