Abstract
If the symbol $g_k$ of a SPDE $R_k$ is 2-acyclic, then the operations of prolongation and projection on $R_k$ commute \[ \rho^{k+l+2}_{k+l+1}((R_k)_{+l+2}) = \left(\rho^{k+l+1}_{k+l}((R_k)_{+l+1})\right)_{+1}.\] We apply this to study contact of three-dimensional CR-manifolds.
Information
Published: 1 January 1997
First available in Project Euclid: 15 August 2018
zbMATH: 0893.58060
MathSciNet: MR1476253
Digital Object Identifier: 10.2969/aspm/02510386
Rights: Copyright © 1997 Mathematical Society of Japan
