• Cassa
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      fedilink
      310 months ago

      no, not really. In engineering math, sure but theoretical math it’s not

      • @[email protected]
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        fedilink
        610 months ago

        0.999… = 1 in theory also.

        Otherwise, there exists a δ such that 1 - δ = 0.999…

        Then, the δ should have a first nonzero digit. Let us say it is in the millionth placd. But then, 0.999… cannot have a 9 in the millionth place.

      • @matiamas
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        210 months ago

        Even in theoretical math, 0.999 repeating ends up being exactly equal to 1. In fact, any terminating decimal can be rewritten in a similar manner. For example, 0.25 is exactly equal to 0.24999999 repeating