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@fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish • 1 year ago

I just cited myself.

mander.xyz

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I just cited myself.

mander.xyz

@fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish • 1 year ago
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  • @mpa92643@lemmy.world
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    23•1 year ago

    “Approximately equal” is just a superset of “equal” that also includes values “acceptably close” (using whatever definition you set for acceptable).

    Unless you say something like:

    a ≈ b ∧ a ≠ b

    which implies a is close to b but not exactly equal to b, it’s safe to presume that a ≈ b includes the possibility that a = b.

    • @EatATaco@lemm.ee
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      5•1 year ago

      Can I get a citation on this? Because it doesn’t pass the sniff test for me. https://en.wikipedia.org/wiki/Approximation

      • @mpa92643@lemmy.world
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        20•1 year ago

        Sure! See ISO-80000-2

        Here’s a link: https://cdn.standards.iteh.ai/samples/64973/329519100abd447ea0d49747258d1094/ISO-80000-2-2019.pdf

        • @WldFyre@lemm.ee
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          3•1 year ago

          ISO is not a source for mathematical definitions

          • @mpa92643@lemmy.world
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            19•1 year ago

            It’s a definition from a well-respected global standards organization. Can you name a source that would provide a more authoritative definition than the ISO?

            There’s no universally correct definition for what the ≈ symbol means, and if you write a paper or a proof or whatever, you’re welcome to define it to mean whatever you want in that context, but citing a professional standards organization seems like a pretty reliable way to find a commonly-accepted and understood definition.

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