This chapter contains a brief review of known facts from potential theory in ℝ^{N}and several complex variables.

Let^{N}. Smooth will mean that the boundary is of class C^{2}. (See also the discussion in §2 below.) In what follows in this chapter the class C^{1+ε}would suffice - with slight modifications of the argument. The results would become essentially more difficult if the boundary were only C^{1}(or more generally satisfy a Lipschitz condition). However, since many of the applications to complex analysis require a "parabolic" approach, and the definition of pseudo-convexity