Let A be a function algebra,
considered as a closed subalgebra of C(M), where M is the space of multiplicative
linear functionals on A. Let ∂ denote the Šilov boundary of A. We shall call M∖∂
the “interior of M” and say a function g on this “interior” is A-holomorphic if each φ
in M∖∂ has a neighborhood on which g is uniformly approximable by elements of
A.
What we shall observe here is that results of the Phragmén-Lindelöf type apply
to certain A-holomorphic functions.