# Analytic polyhedron

In mathematics, especially several complex variables, an analytic polyhedron is a subset of the complex space Cn of the form

$\{ z \in D : |f_j(z)| < 1, 1 \le j \le N \}\,$

where D is a bounded connected open subset of Cn and $f_j$ are holomorphic on D.[1] If $f_j$ above are polynomials, then the set is called a polynomial polyhedron. Every analytic polyhedron is a domain of holomorphy and it is thus pseudo-convex.

The boundary of an analytic polyhedron is the union of the set of hypersurfaces

$\sigma_j = \{ z \in D : |f_j(z)| = 1 \}, 1 \le j \le N.$

An analytic polyhedron is a Weil polyhedron, or Weil domain if the intersection of k hypersurfaces has dimension no greater than 2n-k.[2]