3 ms·
This has nothing to do with notation. It's perfectly possible to define infinite sequences without using dots. In particular if they are constant. In the above
by heinrichhartman 6y ago
This has nothing to do with notation. It's perfectly possible to define infinite sequences without using dots. In particular if they are constant. In the above case:
a_i = 9 for i \in \IZ and i < 0
a_i = 0 for i \in \IZ and i >= 0
Where \IZ are the integers.