Science Memes

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submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 11 points 10 months ago (2 children)

Why do we even use natural numbers as a subset?

There are whole numbers already

[–] [email protected] 3 points 10 months ago* (last edited 10 months ago) (1 children)

Apparently some people are scared of negative numbers.

[–] [email protected] 2 points 10 months ago

They're not natural

[–] [email protected] 3 points 10 months ago* (last edited 10 months ago) (1 children)

I'm not too good at math but i think it's because the set of integers is defined as the set that contains all natural numbers and their opposites, while the set of natural numbers is defined using the successor function - 0 (or 1) is a natural number; if a number n natural, then S(n) is natural where S(n) = n+1.

[–] [email protected] 1 points 10 months ago

Thanks!

But if we talk whole numbers, we just change the rule that if n is whole, then S(n) is whole where S(n)=n±1.

Essentially just adding possibility for minus again.