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Why is 0 not a number?

(45 Posts)
ElfOnTheTopShelf Fri 22-Jul-11 21:14:43

Surely it is classed as a number, even if it is nothing?
I've tried to set a few online things up recently, and my password is never accepted because "it must contain a number". Yes... it does... 0

AurraSing Fri 22-Jul-11 21:16:11

Are you using O or 0?

TattyDevine Fri 22-Jul-11 21:17:32

Its not a number, its an additive identity

ThePiperAtTheGatesOfDawn Fri 22-Jul-11 21:18:10

I am not a munber I am a name

ThePiperAtTheGatesOfDawn Fri 22-Jul-11 21:18:29

number I mean

ElfOnTheTopShelf Fri 22-Jul-11 21:18:30

def 0, I have a laptop with separate number section (unique to the keys with the characters above iyswim).

tabulahrasa Fri 22-Jul-11 21:19:02

it's an absence of numbers...seems a bit deep for qualifying for a password though hmm

TattyDevine Fri 22-Jul-11 21:21:23

Zero isn't a member of the set of Natural Numbers since you normally don't start counting with zero. A primitive society developing a counting system wouldn't think of "none" ... they'd start counting with "one." Thus, if by "number" you mean "the set of all Natural Numbers," then zero isn't among them. Zero is more of a placeholder digit.

ShellyBoobs Fri 22-Jul-11 21:22:52

Similarly, black is not a colour.

Yes, I know that's irrelevant, but nevermind.

Nagini Fri 22-Jul-11 21:23:06

I think they ban it because people always change a word to pe0ple and think they are sneaky passworders smile

thisisyesterday Fri 22-Jul-11 21:24:53

because it isn't a number. that's why

ElfOnTheTopShelf Fri 22-Jul-11 21:25:44

its frustrating, because its only recently it has become a problem, I have a similar (not same!) password for a few other sites which have all been accepted. The passwords are always over 10 characters, have a 0 and a special character, but 0 now appears to be a no no!

cyb Fri 22-Jul-11 21:26:04

It has no value

ElfOnTheTopShelf Fri 22-Jul-11 21:27:15

so in terms of keyboards, if it isn't a number, what is it classed as? A special character?

TattyDevine Fri 22-Jul-11 21:29:48

Its a placeholder, of sorts.

TattyDevine Fri 22-Jul-11 21:30:33

Y'know, of integers, positive numbers, algebraic structures, that kind of thing.

TattyDevine Fri 22-Jul-11 21:30:42


Nagini Fri 22-Jul-11 21:30:46

marvels at clever tatty

TattyDevine Fri 22-Jul-11 21:31:36

Oh fuck in terms of keyboards. Its a...its the ) symbols arsehole. Its a little dilated though. Probably too much Friday night bumsex...

TattyDevine Fri 22-Jul-11 21:32:09

wine makes mummy clever

complexnumber Fri 22-Jul-11 21:33:27

I am not a munber I am a name

I love that!

Also agreeing with everything TattyDevine stated, though I'm not sure the definition of Counting Numbers and Natural Numbers is universally defined. (I'm sure it was a little bit different in Turkey.) I could be wrong.

NasalCoffeeEnema Fri 22-Jul-11 21:33:31

Apparently Oxford and Cambridge differ on their opnions as to whether ity is a number or not

ElfOnTheTopShelf Fri 22-Jul-11 21:33:33


thisisyesterday Fri 22-Jul-11 21:34:29

DP says it's because they have a sucky password storage system

so there you have it.

DeWe Fri 22-Jul-11 21:52:43

Zero is a concept not a number grin
Like infinity is a concept not a number.
The Greeks (who did a lot of maths) didn't use zero, and I think the Romans referred to it as a word ("nulla" ??) rather than as a number.
Wasn't it the Babylonians that produced zero as a number about 100-200AD.
Often in maths you look at what happens as zero is approached (ie make the numbers get smaller and smaller)

Of course I can also prove to you that 1 = 2 thus producing problems for arithmatic as a whole.

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