Regularity for Quasilinear Second-Order Subelliptic Equations
Regularity for Quasilinear Second-Order Subelliptic Equations
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DOI:
10.1002/cpa.3160450104
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发表时间:
1992
影响因子:
3
通讯作者:
Chao-Jiang Xu
中科院分区:
文献类型:
--
作者:
Chao-Jiang Xu
In this paper, we study the regularity of solutions of the quasilinear equation where X = (X1,…,Xm) is a system of real smooth vector fields, Aij, B ϵ C∞(Ω × ℝ Rm+1). Assume that X satisfies the Hormander condition and (Aij(x, z,ζ)) is positive definite. We prove that if u ϵ S2,α(Ω) (see Section 2) is a solution of the above equation, then u ϵ C∞ (Ω).