Originally Published In
Eur J Math. 2015 Dec;1(4):731-745. Epub 2015 Jul 25.
We characterize functions of d-tuples of bounded operators on a Hilbert space that are uniformly approximable by free polynomials on balanced open sets.
Agler, Jim and McCarthy, John E., "Non-commutative holomorphic functions on operator domains" (2015). Mathematics Faculty Publications. 21.