| The PN space under the strong topology is a Hausdorff space and satisfies the first countability axiom. |
| At the heart of all fundamental theories is the concept of countability. |
| Appendices are included on Mathspeak, countability, and decadic notation. |
| But as a delegate I am very aware of the countability I have to represent members' views, rather than just my own and I need to discuss this widely with others. |
| Throughout the article X will denotes the topological Hausdroff group, written additively, which satisfies the first axiom of countability. |
