The Schwarz reflection principle
in one complex variable can be stated as follows. Let M and M′ be two real analytic
curves in ℂ and ℋ a holomorphic function defined on one side of M, extending
continuously through M, and mapping M into M′. Then ℋ has a holomorphic
extension across M. We address here the question of extending this classical
theorem to higher complex dimensions for some class of hypersurfaces and
mappings.