this post was submitted on 07 May 2024
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I just found out about this debate and it's patently absurd. The ISO 80000-2 standard defines ℕ as including 0 and it's foundational in basically all of mathematics and computer science. Excluding 0 is a fringe position and shouldn't be taken seriously.
I could be completely wrong, but I doubt any of my (US) professors would reference an ISO definition, and may not even know it exists. Mathematicians in my experience are far less concerned about the terminology or symbols used to describe something as long as they’re clearly defined. In fact, they’ll probably make up their own symbology just because it’s slightly more convenient for their proof.
My experience (bachelor's in math and physics, but I went into physics) is that if you want to be clear about including zero or not you add a subscript or superscript to specify. For non-negative integers you add a subscript zero (ℕ_0). For strictly positive natural numbers you can either do ℕ_1 or ℕ^+.
I hate those guys. I had that one prof at uni and he reinvented every possible symbol and everything was so different. It was a pita to learn from external material.
I feel so thoroughly called out RN. 😂
From what i understand, you can pay iso to standardise anything. So it's only useful for interoperability.
Can I pay them to make my dick length the ISO standard?
I feel they have an image to maintain, but i also feel they would sell out for enough money. So.. tell me if you make it.
Yeah, interoperability. Like every software implementation of natural numbers that include 0.
How programmers utilize something doesn't mean it's the mathematical standard, idk why ISO would be a reference for this at all
Because ISO is the International Organisation for Standardization
Yes, but it's not for mathematicians. It's for the applied fields.
Yeah dont do that.
Ehh, among American academic mathematicians, including 0 is the fringe position. It's not a "debate," it's just a different convention. There are numerous ISO standards which would be highly unusual in American academia.
FWIW I was taught that the inclusion of 0 is a French tradition.
I'm an American mathematician, and I've never experienced a situation where 0 being an element of the Naturals was called out. It's less ubiquitous than I'd like it to be, but at worst they're considered equally viable conventions of notation or else undecided.
I've always used N to indicate the naturals including 0, and that's what was taught to me in my foundations class.
Of course they're considered equally viable conventions, it's just that one is prevalent among Americans and the other isn't.
I think you're using a fringe definition of the word "fringe".
I'm not.
The US is one of 3 countries on the planet that still stubbornly primarily uses imperial units. "The US doesn't do it that way" isn't a great argument for not adopting a standard.
I have yet to meet a single logician, american or otherwise, who would use the definition without 0.
That said, it seems to depend on the field. I think I've had this discussion with a friend working in analysis.
I did say mathematician, not logician.
Logicians are mathematicians. Well, most of them are.
But not all mathematicians are logicians.
Logically.
This isn't strictly true. I went to school for math in America, and I don't think I've ever encountered a zero-exclusive definition of the natural numbers.
It is true.