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Anonymous at Sun, 7 Jul 2024 17:37:51 UTC No. 16271673
I thought this was a science channel
🧵 what kind of spider is this?
Anonymous at Sun, 7 Jul 2024 16:22:10 UTC No. 16271608
🧵 Are women meant to be herbivores?
Anonymous at Sun, 7 Jul 2024 15:29:47 UTC No. 16271554
More women than men are vegan (men also eat more meat) and when women eat a plant based diet their periods cramps severity decreases (hurts less). So, are women meant to be herbivores?
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Anonymous at Sun, 7 Jul 2024 15:20:41 UTC No. 16271549
I was thinking of p-adic integers and realized something. Both are uncountably infinite, both are completions of a countable thing allowing for arbirtrary sequences in some sense, both have algebraic structure. But p-adics are less schizo than real numbers because, if you define p-adics by an algorithm that computes its n'th digit, you have the following computable properties
- You can add p-adics
- You can subtract p-adics
- You can multiply p-adics
- You can compare p-adics (one-sided computability, i.e. RE)
This is really nice in comparison with real numbers, wherein whatever representation you have, I don't think you have such nice properties. I think comparison being one-sided computable, or RE, forces something like having a real number be represented by its digits. But then addition is not computable.
So my questions are twofold
1. Is there a computable representation of real numbers that has nice properties like p-adics above?
2. If not, why? The construction seems very similar, just with a different metric. So why are p-adics algebraically nicer in this way?
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Anonymous at Sun, 7 Jul 2024 15:10:43 UTC No. 16271543
>The question which befuddled /sci/
🧵 Elastic VS Plastic Deformation
Anonymous at Sun, 7 Jul 2024 14:56:15 UTC No. 16271530
Does plastic deformation look different from elastic deformation as the pressure is rising? Essentially, once a material has reached its yield strength, does deformation begin to look different, other than resulting in permanent deformation?
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Anonymous at Sun, 7 Jul 2024 14:55:35 UTC No. 16271529
Why do scientist need money to do things like go to space or cure diseases? It's not like money magically creates resources we have all the tools to pretty much do whatever we want, why would money be a factor?
🧵 maybe I should post this in /sqt/
Anonymous at Sun, 7 Jul 2024 14:37:17 UTC No. 16271517
Okey guys, so I'm a trans girl who is into math and need help from super smart math guys like u (apologies for using gendered language. I'm assuming you are all assigned male at birth, but I could be wrong, sowrry ;_;). So anyway, I was toying around with the formula for [math]\tan(\alpha + \beta)[/math] by adding [math]\gamma[/math] and noticed a curious pattern
[eqn]\tan(\alpha + \beta + \gamma) = \frac{\tan(\alpha) + \frac{\tan(\beta) + \tan(\gamma)}{1 - \tan(\beta)\tan(\gamma)}}{1 - \tan{\alpha}\frac{\tan(\beta) + \tan(\gamma)}{1 - \tan(\beta)\tan(\gamma)}} = \frac{\tan(\alpha) + \tan(\beta) + \tan(\gamma) - \tan(\alpha)\tan(\beta)\tan(\gamma)
It looks to me like the numbenator is some form of 1 - 3 + 5 - 7 + ... while denimonator is some sort of 0 - 2 + 4 - 6 + ... In fact, after doing some research I learned are called elementary symmetric polynomials (e0, e1, e2, ..., en):
[eqn]
e_0 = 1 \\
e_1 = \tan(\alpha) + \tan(\beta) + \tan(\gamma) \\
e_2 = \tan(\alpha)\tan(\beta) + \tan(\alpha)\tan(\gamma) + \tan(\beta)\tan(\gamma) \\
e_3 = \tan(\alpha)\tan(\beta)\tan(\gamma)
\tan(\alpha + \beta + \gamma) = \frac{e_1 - e_3}{e_0 - e_2}
[/eqn]
Now it's so easy to to generalize the tan(a + b) as a ratio between odd and even sums of elementary symmetric polynomials
[eqn]
e_k = \sum_{1 \leq j_1 \leq j_2 \leq \dots \leq j_k \leq n } \tan(\alpha_{j_1}) \dots \tan(\alpha_{j_k}) \\
\tan(\sum_{k=1}^{n}\alpha_k) = \frac{\sum_{k = 0}^{\lfloor n / 2\rfloor} (-1)^k e_{2k + 1}}{\sum_{k = 0}^{\lfloor n / 2\rfloor} (-1)^k e_{2k}} = \frac{e_1 - e_3 + e_5 - \dots + e_n }{e_0 - e_2 + e_4 - \dots + e_{n-1} }
[/eqn]
BUT, since we mention 1 - 3 + 5 - 7 + ... and 0 - 2 + 4 - 6 + ... this is reminiscent of Maclaurin series of [math]\sin(x)[/math] and [math]\cos(y)[/math], righte?
1/2
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Anonymous at Sun, 7 Jul 2024 14:21:47 UTC No. 16271504
>makes you die of old age
Nothing personal, Kid.
Just doing my job.
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Anonymous at Sun, 7 Jul 2024 14:14:50 UTC No. 16271495
Has the Tychonic model of the solar system ever actually been disproven? It seems most people's criticism of it is that it's "too complicated" and goes against Occam's razor.
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Anonymous at Sun, 7 Jul 2024 13:28:16 UTC No. 16271465
Are we living in a simulation anon?
🧵 Something impossible to know
Anonymous at Sun, 7 Jul 2024 12:14:30 UTC No. 16271397
Say me something you think that
No Matter how advance we are we're never gonna know
🧵 /peg/ - Paleontology and Evolution General
Anonymous at Sun, 7 Jul 2024 12:06:00 UTC No. 16271393
Dinosaurs edition, seems to be a popular topic
🗑️ 🧵 Can you scientifically disproof this picture?
Anonymous at Sun, 7 Jul 2024 10:50:34 UTC No. 16271355
I doubt it
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Anonymous at Sun, 7 Jul 2024 10:04:31 UTC No. 16271314
Why the fuck aren't we sending rovers to every moon in the solar system RIGHT NOW?!
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Anonymous at Sun, 7 Jul 2024 09:12:13 UTC No. 16271278
Where are all the Aliens !?
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Anonymous at Sun, 7 Jul 2024 07:59:23 UTC No. 16271250
How do we scientifically explain Biden's mental faculties?
🧵 /mg/ maths general
Anonymous at Sun, 7 Jul 2024 07:37:24 UTC No. 16271237
[math]/\mathfrak{mg}/[/math]
Deutſche Mathematik edition
Talk maths, formerly >>16240472
🧵 To what extent is Covid still with us?
Anonymous at Sun, 7 Jul 2024 07:30:28 UTC No. 16271230
🗑️ 🧵 distancing the retards further
Anonymous at Sun, 7 Jul 2024 07:28:46 UTC No. 16271228
could we convince flat-earthers that the bermuda triangle is actually the outer edge of earth, and that wherever is opposite of that is actually the center? i feel like it would be really funny, and it's definitely something that they would think makes sense
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Anonymous at Sun, 7 Jul 2024 07:11:59 UTC No. 16271213
Will the far side samples reveal anything interesting?
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Anonymous at Sun, 7 Jul 2024 07:04:03 UTC No. 16271200
Given the scale of empty space in the universe, is it not analogous to the empty space around protons and neutrons, even atoms themselves?
Really makes one think.