proof that uniformly continuous is proximity continuous
Let be a uniformly continuous function from uniform spaces to with uniformities and respectively. Let and be the proximities generated by (http://planetmath.org/UniformProximity) and respectively. It is known that and are proximity spaces with proximities and respectively. Furthermore, we have the following:
Theorem 1.
is proximity continuous.
Proof.
Let be any subsets of with . We want to show that , or equivalently,
for any . Pick any . Since is uniformly continuous, there is such that
for any . As a result,
which implies that
Similarly . Now, is equivalent to , so we can pick
Then
and therefore
This shows that is proximity continuous.∎