The Hessian equation on nonsmooth k-convex domains or in the presence of subsolutions

Abstract

It is proved for $k>n/2$ that the Dirichlet problem of the $k$-Hessian measure on a (nonsmooth and nonuniformly) $k$-convex (also known as $k$-hyperconvex) domain for any finite Borel measure as right-hand side and boundary data taken from a $k$-convex and continuous function on the closure of the domain has a unique solution. Merely continuous boundary data are sufficient for strictly $k$-convex domains (i.e., if there exist strong barriers).

16 pages, 0 figures. Submitted to Communications in Partial Differential Equations