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heinrichhartman
on May 8, 2020
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0.999...= 1
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.
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