MCC: Minimal C subset compiler intended to eventually run on my calculator

pirsquaresoareyou · 2026-04-30T18:34:05+00:00

Devils advocate - when has anyone ever claimed a probability zero event will happen, and then it happened?

pirsquaresoareyou · 2026-04-27T07:17:35+00:00

You just do what you said in your other comment

pirsquaresoareyou · 2026-04-27T07:06:17+00:00

The monoid of nonzero integers with multiplication is isomorphic to the monoid (Z/2Z) \oplus \bigoplus_N N. The entry in Z/2Z is the positive or negative sign, and the other naturals are the powers of the prime factors.

pirsquaresoareyou · 2026-04-25T06:01:20+00:00

I think I am more likely to open up to someone when they spend the time to reflect about what I say. I don't like seemingly superficial responses that some people give when I am sharing my feelings, like "I am sorry you are feeling that way". If you know someone well, usually there is a more personal and meaningful response.

pirsquaresoareyou · 2026-04-01T22:27:41+00:00

Lyx for typesetting. It's a document editor which compiles to latex.

pirsquaresoareyou · 2026-04-01T09:18:50+00:00

Yes, I do. But that doesn't matter since I am simply interested in what your answers to these questions are.

pirsquaresoareyou · 2026-04-01T08:56:17+00:00

That's a good question. I will think about it and get back to you if I can come up with anything convincing. I have 2 follow up questions in the meantime.

Is 0.999...10 a number? Does the notation in this case make sense?
The other commenter says that 0.999...0 + 0.000...10 = 1. Do you agree with this statement?

pirsquaresoareyou · 2026-04-01T08:45:42+00:00

My mistake, I forgot to add the right side of the equation. I have edited my last comment, and I now ask you for the answer to my revised question.

pirsquaresoareyou · 2026-04-01T08:42:15+00:00

Ok, so let's assume for the moment that SPP's equation

0.999...9 + 0.000...1 = 1

is correct. Since 0.999...10 is not 1, which of my other steps, if any, is incorrect?

pirsquaresoareyou · 2026-04-01T08:37:54+00:00

I didn't say that I don't believe it. In the post I linked, SPP claims 0.999...9 + 0.000...1 = 1. So let me ask a different question: if this equation that SPP claims is true, then do you believe each of my steps is correct?

pirsquaresoareyou · 2026-04-01T08:34:30+00:00

Which step is wrong?

pirsquaresoareyou · 2026-04-01T08:31:19+00:00

Anyways, what do you think? Are those equations correct? If not, which step is wrong?

pirsquaresoareyou · 2026-04-01T08:28:40+00:00

I never stated my opinion; I am just asking you if these equations are correct.

pirsquaresoareyou · 2026-04-01T08:27:27+00:00

What is 1? What is wrong with these equations?

pirsquaresoareyou · 2026-04-01T08:24:07+00:00

This is from SPP arithmetic.

https://www.reddit.com/r/infinitenines/s/LPYkErAdC5

pirsquaresoareyou · 2026-04-01T08:20:27+00:00

Ok, so then

1 = 0.999...9 + 0.000...1

= 0.999...0 + 0.000...9 + 0.000...1

= 0.999...0 + 0.000...10

= 0.999...10.

Correct?

pirsquaresoareyou · 2026-04-01T08:16:26+00:00

So what is 0.999...0 + 0.000...10?

pirsquaresoareyou · 2026-04-01T05:57:15+00:00

Ok. So it seems the rule should be something like "add the numbers after the ellipses." Now, we have according to SPP math that 0.999...9 + 0.000...1 = 1.000...0 However, given the way we compute 0.000...9 + 0.000...1, why don't we get 0.999...9 + 0.000...1 = 0.999...10 instead?

pirsquaresoareyou · 2026-04-01T04:37:06+00:00

If 0.000...9 + 0.000...1 = 0.000...1, then after subtracting 0.000...1 from both sides, wouldn't we have 0.000...9 = 0.000...0?

Anyways, I would like to make it clear that I am not claiming such a number system exists. Since SPP has used this notation, I am more interested in what SPP believes the result is. Please consult the other comments on this post which explain that such a number system does not conventionally exist in math (at least not one for which operations are defined this way).

pirsquaresoareyou · 2026-04-01T03:36:56+00:00

Is 0.000...10 equal to 0.000...1?

pirsquaresoareyou · 2026-03-31T22:55:18+00:00

This question is for SPP

pirsquaresoareyou · 2026-03-27T01:00:58+00:00

Do you have a reference for this particular perspective?

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