Riemann domains - Riemann domains over Cn; holomorphic functions; examples of Riemann regions; holomorphic extension of Riemann domains; the boundary of a Riemann domain; union, intersection, and direct limit of Riemann domains; domains of existence; maximal holomorphic extensions; liftings of holomorphic mappings I; holomorphic convexity; Riemann surfaces; pseudocenvexity - Plurisubharmonic functions; pseudoconvexity; the Kiselman minimum principle; d-operator; solution of the Levi problem; regular solutions; approximation; the Remmert embedding theorem; the Docquier-Grauert criteria; the division theorem; spectrum; liftings of holomorphic mappings II; envelopes of holomorphy for special domains - Univalent envelopes of holomorphy; k-tubular domains; matrix Reinhardt domains; the envelope of holomorphy of X/M; separately holomorphic functions; extension of meromorphic functions; existence domains of special families of holomorphic functions - special domains; the Ohsawa-Takegoshi extension theorem; the Skoda division theorem; the Catlin-Hakim-Sibony theorem; structure of envelopes of holomorphy.