English CR manifold Cited by user Rjwilmsi on 28 Mar 2015 In mathematics, a CR manifold is a differentiable manifold together with a geometric structure modeled on that of a real hypersurface in a complex vector space, or more…
English Hörmander's condition Cited by user DOI bot on 09 Jun 2008 In mathematics, Hörmander's condition is a property of vector fields that, if satisfied, has many useful consequences in the theory of partial and stochastic…