IZVESTIYA MATHEMATICS, vol.73, no.6, pp.1149-1171, 2009 (SCI-Expanded)
We study the absolute basis problem in algebras of holomorphic functions in non-commuting variables generating a finite-dimensional nilpotent Lie algebra g. This is motivated by J. L. Taylor's programme of non-commutative holomorphic functional calculus in the Lie algebra framework.