We generalize the concepts of even and odd functions in the
setting of complex-valued functions of a complex variable. If
is a fixed
integer and
is
an integer with
,
we define what it means for a function to have
type . When
, this reduces to the
notions of even ()
and odd ()
functions respectively. We show that every function can be decomposed
in a unique way as the sum of functions of types-0 through
.
When the given function is differentiable, this decomposition is compatible with the
differentiation operator in a natural way. We also show that under certain conditions,
the type
component of a given function may be regarded as a real-valued function of a real
variable. Although this decomposition satisfies several analytic properties, the
decomposition itself is largely algebraic, and we show that it can be explained in
terms of representation theory.