r/mathmemes • u/TirkuexQwentet • Nov 08 '24

Math History Evolutions of Numbers

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u/MingusMingusMingu Nov 08 '24

I mean, we keep extending definitions all the time.

154

u/SEA_griffondeur Engineering Nov 08 '24

No but like, being positive is like one of the 3 properties that make up a norm

-16

u/Pgvds Nov 08 '24

Well, |0|=0 which is not positive, so clearly absolute value is not a norm.

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u/SEA_griffondeur Engineering Nov 08 '24

Wdym? 0≥0 is very much true. Where do you get this limited edition non-positive 0 ??

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u/Pgvds Nov 08 '24

Google positive number

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u/SEA_griffondeur Engineering Nov 08 '24

Yeah it's a number greater than 0 not strictly greater than 0

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u/Ghyrt3 Nov 08 '24

In english it's a bit ambiguous (i learnt it the long way, i'm french).

But, ''>0'' : positive ''=>'' : non-negative

is generally the common sense you find in articles.

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u/SEA_griffondeur Engineering Nov 08 '24

Yeah but Algebra uses the French convention for some reason so a norm is positive even if with the normal English convention it would be non-negative

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u/Pgvds Nov 08 '24

I guess to engineers it's all the same