TY - JOUR T1 - Hypoellipticity of Nonlinear Partial Differential Equations AU - Zhou Xiaofang JO - Journal of Partial Differential Equations VL - 3 SP - 215 EP - 230 PY - 1994 DA - 1994/07 SN - 7 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/jpde/5683.html KW - Hypoellipticity KW - patadifferential operators KW - pata-linearization KW - parametrix AB - In this paper, we study the hypoellipticity problems for fully nonlinear panial differential equations of order m. For a solution u ∈ C^p_{loc}(Ω), if the linearized operator for the nonlinear equation on u satisfies some subelliptic conditions, we can deduce u ∈ C^∞(Ω) by using the paradifferential operator theory of J. -M. Bony.