Uniform Convergent

Uniform Convergence Explained
Sequence of functions
,
, 2, 3, ... is said to be uniformly convergent to
for a set
of values of
if, for each
, an integer
can be found such that
for
and all
.A series
converges uniformly on
if the sequence
of partial sums defined by
converges uniformly on
.To test for uniform convergence, use Abel's uniform convergence test or the Weierstrass M-test. If individual terms
of a uniformly converging series are continuous, then the following conditions are satisfied.1. The series sum
is continuous.2. The series may be integrated term by term
For example, a power series
is uniformly convergent on any closed and bounded subset inside its circle of convergence.3. The situation is more complicated for differentiation since uniform convergence of
does not tell anything about convergence of
. Suppose that
converges for some
, that each
is differentiable on
, and that
converges uniformly on
. Then
converges uniformly on
to a function
, and for each
,







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