et
be the interval
with point
and point
made identical. In other words, a function
is well defined on
if and only if it has the
property
Notation
For a sequences
we use the
notations
Proposition
For
we
have
Using results of the section
(
Fourier analysis in
Hilbert space section
) we state that for
there
is
Such result expands to
:
The
version
is
