Section 32: Problem 3 Solution
Working problems is a crucial part of learning mathematics. No one can learn topology merely by poring over the definitions, theorems, and examples that are worked out in the text. One must work part of it out for oneself. To provide that opportunity is the purpose of the exercises.
James R. Munkres
Theorem 29.2: If
is Hausdorff then it is locally compact iff for every
and its neighborhood
there is its neighborhood
such that
is compact. Lemma 31.1: If
is
then it is regular iff for every
and its neighborhood
there is its neighborhood
such that
. Therefore, if
is Hausdorff and locally compact then it is
and regular.