If A is an algebra with finite right global dimension, then for any
automorphism α and α-derivation δ the right global
dimension of A[t;α,δ] satisfies [
rgld , A \le rgld , A[t; \alpha, \delta] \le rgld , A
] We extend this result to the case of holomorphic Ore extensions and
smooth crossed products by Z of ⊗^-algebras.