Abstract. Let (X, ω) be an n-dimensional compact Kähler manifold. We study degenerate complex Hessian equations of the form (ω+dd c ϕ) m ∧ω n−m = F (x, ϕ)ω n . Under some natural conditions on F , this equation has a unique continuous solution. When (X, ω) is rational homogeneous we further show that the solution is Hölder continuous.
IntroductionLet (X, ω) be a compact Kähler manifold of complex dimension n. Fix an integer m between 1 and n, and let d, dc denote the usual real differentialWe are studying degenerate complex Hessian equations of the formwhere the density F : X × R → R + satisfies some natural integrability conditions (see Theorem A below).The case m = 1 corresponds to the Laplace equation and the case m = n corresponds to degenerate complex Monge-Ampère equations which have been studied intensively in recent years (see [Bl03, Bl05, Bl12, BGZ08, BK07, EGZ09, GKZ08, GZ05, GZ07, Kol98, Kol02, Kol03, Kol05]). So, equation ( Following Blocki [Bl05] we develop a potential theory for the complex Hessian equation on compact Kähler manifold. We define the class of (ω, m)-subharmonic functions which is a generalization of the class of ω-plurisubharmonic functions when m = n. The definition of the complex Hessian operator on bounded (ω, m)-subharmonic functions is delicate due to difficulties in regularization process.To go around this difficulty, we introduce a capacity and use it to define the concept of quasi-uniform convergence. This allows us to define a suitable class of bounded and quasi-continuous (ω, m)-subharmonic functions on which the complex Hessian operator is well defined and continuous under quasi-uniform convergence.Date: July 13, 2017.