/sci/ - Science & Math

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is the set of all infinities infinite ?

Anonymous Sun 10 Oct 08:18:50 2021 No.13735476 View Reply Original Report

Quoted By: >>13743334

and if so is it uncountably infinite ?

47 posts and 1 image omitted

Anonymous

Anonymous Tue 12 Oct 2021 14:21:11 No.13742929 Report

Quoted By:

>>13735486
that's not $\infty$
that's $\infty+1$

Anonymous

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Anonymous Tue 12 Oct 2021 14:44:14 No.13743005 Report

Quoted By: >>13743018

If you adopt the Powerset axiom and the axiom of Infinity, then two infinite sets N and C=PN exist. Let's say we adopt Choice or the Continuum hypothesis, then there is an ordinal of size C, i.e. an uncountable ordinal.

Now adopt transfinite induction for ordinals up to C, then you can apply the powerset operation to C exactly |C| times.

C, PC, PPC, PPPC, ..., P^(|N|)C, P^(|N|+1)C, P^(|N|+2)C, ... P^(|C|)C, ..., P^(|C|+69)C.

All those sets are different, by Cantors result that |PX| > X for any set.

Now of course, I've used a shitton of axioms there. A constructive set theory will only prove that some large but countable ordinal is well-ordered. Say
https://en.wikipedia.org/wiki/Bachmann%E2%80%93Howard_ordinal

Anonymous

Anonymous Tue 12 Oct 2021 14:46:13 No.13743012 Report

Quoted By:

>>13741113
then represent $\pi$ as $22\over7$

Anonymous

Anonymous Tue 12 Oct 2021 14:47:41 No.13743018 Report

Quoted By:

>>13743005
(Here I gave you an uncountable class of different infinities that is a set in ZFC - a fairly small one, since it's just as big as the reals. As others have pointed out, the collection of ALL infinite sets will not be a set.)

Anonymous

Anonymous Tue 12 Oct 2021 16:49:16 No.13743334 Report

Quoted By:

>>13735476
No, it has cardinality five
https://www.youtube.com/watch?v=Ds2bMtJla70

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Anonymous Sun 10 Oct 14:15:40 2021 No.13736235 View Reply Original Report

Quoted By: >>13742088 >>13743323

What nootropics have you used? Which of them can you suggest?

Recently, I noticed my focus going down despite structuring my day better, sleeping longer and eating healthier. Any medical enhancements (like adderall) would be a nice try - thus please suggest a few and mention some side-effects you might have suffered.

27 posts and 2 images omitted

Anonymous

Anonymous Tue 12 Oct 2021 06:57:46 No.13742088 Report

Quoted By:

>>13736235
>LSD
Absolutely amazing, it just feels right, helps with motivation a lot
>Noopept
Increased my mental acuity somewhat, but made me angry and irritable

Anonymous

Anonymous Tue 12 Oct 2021 07:25:35 No.13742133 Report

Quoted By:

>>13736417
Wrong and kid drug cope. Weed ruins creativity and focus and is not the white man's drug in any case.

Anonymous

Anonymous Tue 12 Oct 2021 16:31:58 No.13743289 Report

Quoted By:

>>13739486
eating sugar can help with nicotine overdoses

Anonymous

Anonymous Tue 12 Oct 2021 16:33:02 No.13743290 Report

Quoted By:

I use sarcosine, probably won't help if you don't have schizoid pd/schizophrenia though.

Anonymous

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Anonymous Tue 12 Oct 2021 16:46:35 No.13743323 Report

Quoted By:

>>13736235
>What nootropics have you used?
Japanese green tea.
>Which of them can you suggest?
I recommend Japanese green tea, specifically a nice quality Sencha. Don't buy Macha, it is far too bitter. About 125 million Japanese drink this so it is generally regarded as safe (GRAS) so you will not have any legal trouble with this.

Do go for the sophisticated approach and enjoy a cuppa in tranquillity with some nice Omochi.

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Anonymous Tue 12 Oct 15:47:38 2021 No.13743160 View Reply Original Report

Quoted By: >>13743292 >>13743311 >>13743314 >>13743320

I have really bad depression. However, if I have diarrhoea, I feel fine for a while after releasing it all. Why is this?

3 posts omitted

Anonymous

Anonymous Tue 12 Oct 2021 16:33:11 No.13743292 Report

Quoted By:

>>13743160
shit on the streets for better results

Anonymous

Anonymous Tue 12 Oct 2021 16:40:01 No.13743308 Report

Quoted By:

Your vagal nerve runs from your brain down through your gut. Dropping a deuce stimulates the nerve, and goes to your brain. The Vagal nerve also plays a role in anxiety and depression, so the stimuli may be activating part of your brain that is typically quiet.

Anonymous

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Anonymous Tue 12 Oct 2021 16:41:10 No.13743311 Report

Quoted By:

>>13743160
you sure do seem to like talking about yourself.

Anonymous

Anonymous Tue 12 Oct 2021 16:42:30 No.13743314 Report

Quoted By:

>>13743160
Try interracial anal sex.
Clearly you're only happy when brown stuff is moving through your sphincter.

Anonymous

Anonymous Tue 12 Oct 2021 16:44:09 No.13743320 Report

Quoted By:

>>13743160
The cure to your depression must be some bad dragons and some lube.

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Anonymous Tue 12 Oct 05:55:19 2021 No.13741969 View Reply Original Report

Quoted By: >>13741971 >>13742148 >>13743263 >>13743284

Has the internet always existed but humans didn't have the ability to view it? Can you access it without a computer?

Anonymous

Anonymous Tue 12 Oct 2021 05:56:02 No.13741971 Report

Quoted By: >>13741973

>>13741969
Kill yourself

Anonymous

Anonymous Tue 12 Oct 2021 05:56:53 No.13741973 Report

Quoted By:

>>13741971
Don't have an autistic reddit meltdown buddy it's 1am. Get a grip

Anonymous

Anonymous Tue 12 Oct 2021 07:34:53 No.13742148 Report

Quoted By:

>>13741969
No

Anonymous

Anonymous Tue 12 Oct 2021 16:25:04 No.13743263 Report

Quoted By:

>>13741969
Yes, decentralized reality (internet) is in all of us.
Yes, brain waves

Anonymous

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Anonymous Tue 12 Oct 2021 16:30:53 No.13743284 Report

Quoted By:

>>13741969
Isn't the internet just a bunch of computers connected with underwater sea cables and other infrastructure? What are you smoking? Lain's hair?

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Feel bad morning, great later in day?

Anonymous Mon 11 Oct 21:12:18 2021 No.13740669 View Reply Original Report

Quoted By: >>13740933

Can anyone explain this? Will wake up, feel bad, eat breakfast, feel bad... few hours later feel great

14 posts omitted

Anonymous

Anonymous Mon 11 Oct 2021 22:57:24 No.13740924 Report

Quoted By:

There are no “night people”. There are people who choose to work at night because they have to or because they like the isolation or just stay up with electricity or whatever but all human beings are evolved to be morning people period.

Anonymous

Anonymous Mon 11 Oct 2021 22:59:03 No.13740933 Report

Quoted By: >>13740945 >>13742990

>>13740669
I recommend cold showers. Not the whole time, but at the end of your shower, turn it cold and stand under it for at least 30 secs. It's horrible while it's happening and you won't be able to breathe, but when it's done you'll feel like a king

Anonymous

Anonymous Mon 11 Oct 2021 23:00:44 No.13740945 Report

Quoted By:

>>13740933
Cold exposure directly impacts dopamine release. You have to stagger it so not every single day, for the best impact. But yes cold exposure for 5-15 minutes will boost dopamine production. That’s the hormone which produces the feeling of super engaged focus and satisfaction.

Anonymous

Anonymous Tue 12 Oct 2021 14:39:49 No.13742990 Report

Quoted By:

>>13740933
will give this a try. I normally don't shower until the evenings post my workout, but 5-15 min for a solid energy boost is worth it.

Anonymous

Anonymous Tue 12 Oct 2021 16:29:54 No.13743278 Report

Quoted By:

drink water

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Anonymous Tue 12 Oct 01:15:32 2021 No.13741335 View Reply Original Report

Quoted By: >>13743145 >>13743217

Where can I learn math online that is not Common Core?

I started on Khan academy but realized immediately that something was wrong with it. Then I remember the common core debate in the US a while back and realized that was what I was looking at.

I am refreshing my math skills and want to learn the way I did in school.

8 posts and 1 image omitted

Anonymous

Anonymous Tue 12 Oct 2021 15:35:10 No.13743135 Report

Quoted By:

>>13743074
You will learn fractions and long division by studying the general cases presented in intermediate algebra /college algebra. Just go straight for those.

Anonymous

Anonymous Tue 12 Oct 2021 15:40:00 No.13743145 Report

Quoted By:

>>13741335
I have no clue what common core is I'm European but it sounds like you need to suck it up. I personally only watched Khan starting with algebra, and he helpfully reasons out every part, including the basic arithmetic.

Anonymous

Anonymous Tue 12 Oct 2021 16:11:38 No.13743215 Report

Quoted By:

>>13743074
>Now I find that math has been BLACKED
You're trying way too hard, retard.

Anonymous

Anonymous Tue 12 Oct 2021 16:11:55 No.13743217 Report

Quoted By: >>13743264

>>13741335
OP, you absolute mong.
If you want to study differential equations or linear algebra, or just basic precalc, there is NOTHING better than Khan.

If you want to learn just the basics, what the fuck are you doing with your life?

Anonymous

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Anonymous Tue 12 Oct 2021 16:25:19 No.13743264 Report

Quoted By:

>>13743217
There absolutely is something better but I won't tell because fuck pajeets.

There are literally hundreds of millions of you midwits watching the same mind numbing enginigger content.
Millions of midwits that know how to churn out the same worthless thoughts.
Khan Academy is effectively a midwit NPC training camp.
If you aspire to be a pajeet then you should continue watching those videos.

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Category Theory

Anonymous Mon 11 Oct 20:24:13 2021 No.13740534 View Reply Original Report

Quoted By: >>13742001 >>13742163

This shit it just graph theory with more woo and mumbo jumbo

7 posts and 1 image omitted

Anonymous

Anonymous Tue 12 Oct 2021 04:01:39 No.13741748 Report

Quoted By:

Literally the future of AI. Brainlets don't see it. Only the chosen few can

Anonymous

Anonymous Tue 12 Oct 2021 06:09:07 No.13742001 Report

Quoted By:

>>13740534
>>13741726
There's nothing wrong with category theory just because trannies think they can understand it. Once they get to applying it to calculus on manifolds they will get filtered.

Anonymous

Anonymous Tue 12 Oct 2021 06:20:51 No.13742029 Report

Quoted By:

>>13741726
He looks ready for some MOGGING.

Anonymous

Anonymous Tue 12 Oct 2021 07:45:39 No.13742163 Report

Quoted By: >>13743252

>>13740534

> all higher maths is indistinguishable from magic

Anonymous

Anonymous Tue 12 Oct 2021 16:22:33 No.13743252 Report

Quoted By:

>>13742163
its true

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Anonymous Mon 11 Oct 14:23:08 2021 No.13739544 View Reply Original Report

Quoted By: >>13743189 >>13743231

I'm 150 IQ and an Ivy League dropout. That's basically it.

20 posts and 1 image omitted

Anonymous

Anonymous Tue 12 Oct 2021 07:37:56 No.13742150 Report

Quoted By:

>>13741956
kek

Anonymous

Anonymous Tue 12 Oct 2021 07:41:18 No.13742152 Report

Quoted By:

I am a 78 IQ retard who can't add.
Wish I was you

Anonymous

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Anonymous Tue 12 Oct 2021 15:59:16 No.13743189 Report

Quoted By: >>13743200

>>13739544
Okay smarty pants how many jelly beans in the jar?

Anonymous

Anonymous Tue 12 Oct 2021 16:05:46 No.13743200 Report

Quoted By:

>>13743189
~200

Anonymous

Anonymous Tue 12 Oct 2021 16:17:58 No.13743231 Report

Quoted By:

>>13739544
why dropout?

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Phrenology

Anonymous Tue 12 Oct 15:41:30 2021 No.13743150 View Reply Original Report

Quoted By: >>13743230

What’s the verdict /sci/?

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estrogens and mental health

Anonymous Mon 11 Oct 20:35:16 2021 No.13740571 View Reply Original Report

Quoted By:

What is the current scientific explanation for women turning batshit crazy pre-menstrually or post-partum?

Currently accepted disorders:
>pre menstrual dysphoric disorder
>post partum blues/depression/psychosis

(So far 100% of the individuals I have observed exhibited prominent mood changes during menstruation, with some bordering pathological levels).

There is this known relationship between estrogen levels and neurotransmitters. And apparently female schizos/bipolars get worse symptoms in estrogen lows and require less medications on peaks, however studies are small and are not conclusive.

Is maxxing on estrogens a valid preventive psychiatric treatment?

6 posts omitted

Anonymous

Anonymous Tue 12 Oct 2021 15:56:06 No.13743180 Report

Quoted By: >>13743218

>>13743062
What is the evolutive advantage of having, lets say a 10% of fucked up mothers?

Anonymous

Anonymous Tue 12 Oct 2021 16:08:36 No.13743207 Report

Quoted By:

>>13742960
It is. Anon talks out of their ass and dismisses infanticide through the eras before pain mitigation during birth. The female body going through hormone fluctuations post partum in an effort to return to normal is more likely the reason.

Anonymous

Anonymous Tue 12 Oct 2021 16:09:55 No.13743210 Report

Quoted By:

Could be that the processes are fairly intensive and resource hungry and most people in general are unhealthy and malnourished.

The result is the body breaking dangerously away from homeostasis, and the mental state following after.

Anonymous

Anonymous Tue 12 Oct 2021 16:12:12 No.13743218 Report

Quoted By:

>>13743180
You got it backwards. Managing to get 90% "nonfucked" up is evolutionarily advantageous, and the other 10% is just inefficiencies that couldn't get worked out because physical limitations.

Anonymous

Anonymous Tue 12 Oct 2021 16:13:42 No.13743220 Report

Quoted By:

>>13743144
citation needed

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is the set of all infinities infinite ?

Feel bad morning, great later in day?

Category Theory

Phrenology

estrogens and mental health