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An integer is natural iff it is supérieur or equal to 0.
linked to #482029
linked to #482055
An integer is natural iff it is superior or equal to 0.
linked to #482121
An integer is natural iff it is greater or equal to 0.
  • Samer
  • Nov 20th 2010, 17:18
linked to #629260
linked to #1911268
linked to #2106382

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Sentence #482049

An integer is natural iff it is greater or equal to 0.
يكون العدد الصحيح طبيعيا إذا وفقط إذا كان أكبر أو يساوي 0.
Eine ganze Zahl ist genau dann natürlich, wenn sie größer oder gleich 0 ist.
An integer is natural iff it is greater than or equal to 0.
Entjero estas natura, se kaj nur se ĝi estas egala aŭ pli granda ol 0.
Un nombre entier est naturel ssi il est supérieur ou égal à 0.
מספר שלם הוא טבעי אם ורק אם הוא גדול או שווה לאפס.
An integer is natural if and only if it is greater or equal to 0.
Kokonaisluku on luonnollinen vain jos se on suurempi tai yhtä kuin nolla.
Целое число является натуральным тогда и только тогда, когда оно больше или равно нулю.
Un entero es natural si, y solo si, es mayor o igual a 0.


Aug 27th 2010, 00:01
Aug 27th 2010, 00:05
no, iff.
its an abbreviation for "if and only if"
Aug 27th 2010, 00:15
I see. Thank you.
Aug 27th 2010, 00:16
you're welcome. I admit I was waiting for that comment ;).
Aug 27th 2010, 00:25
haha great, did you tag it "useful info" =D ?
Aug 27th 2010, 00:28
I did. But who on earth tagged it as controversial?
Aug 27th 2010, 00:29
(someone who has found a way to enter the imaginary domain, I suppose)
Aug 27th 2010, 00:31
No, I did, because the natural numbers are often defined to NOT include 0 :P.
Aug 27th 2010, 00:33
And so we enter the math department...
Aug 27th 2010, 01:29
Doesn't one usually speak of "greater" rather than "superior" in mathematics? I don't think I've ever seen it phrased like this.
Aug 27th 2010, 01:31
you're probably right, thx.
Aug 27th 2010, 01:31
That's why I added the second translation, actually.

I was going to say that this was probably something from the French, but "superior to" is still very valid, IMO, even in English. More erudite books might use it. But yes, the more common natural thing would be "greater than".
May 16th 2012, 10:19
I'd like to go back to this "iff"

Is it really possible to use this "word" in a sentence like this one?

I believe it's just a short form of "if and only if" in logical formulas, for example you certainly might write: "For any p, q, and r: (p & q) & r iff p & (q & r)", but it's not a real sentence.

Could you really "iff" in a normal sentence, like in the definition of a natural integer? Maybe you still have to write "An integer is natural if and only if it is greater or equal to 0"?
May 17th 2012, 15:47
I think it is used in what you call "normal" sentences.
For example in the Wikipedia article, there are examples for it:

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