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/sci/ - Science & Math

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8901775 No.8901775 [Reply] [Original]

>> No.8902047

The speed of light is constant in all reference frames *drops mic*

>> No.8902055
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8902055

"trivially"


*mental atom bomb*

>> No.8902104

"left as an exercise to the reader"

>> No.8902117
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8902117

>>8901775

>> No.8902118

>>8902104
or
>Proof: see X.XX in the exercise section

>> No.8902119
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8902119

"A mitochondrion cannot be a meter in length!"

>> No.8902176

"It is well known that heavy objects sink (An anchor, cannonball, your girlfriend, etc.) (...)"

>> No.8902207
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8902207

>> No.8902212
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8902212

>>8901775

>> No.8902278
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8902278

Mathematicians need to be stopped

>> No.8902427

>>8902278
Hahahahahaha why

>> No.8902472

>>8902212
is this real?

>> No.8902475

>>8902207
Pls tell me this is fake.

>> No.8902477

This page left intentionally blank

>> No.8902480

>>8902278
kek

>> No.8902484
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8902484

>> No.8902486

>>8902427
Weird or unusual images in your brain help remembering complicated stuff.

>> No.8902489

>>8902486
As if a hair covered ball isn't weird enough.

>> No.8902497
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8902497

>>8902489
Doggos are cuter than balls though. Also note that the common german name for the hairy ball theorem is "Satz vom Igel", which could be translated to "hedgehog theorem". If you try to comb an hedgehog, you will always get a bald spot.

>> No.8902509
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8902509

>>8902497
I won't believe it until I see someone try to actually comb a hedgehog

>> No.8902561

>better known for other work

>> No.8902572

>>8902509
They apparently change their geometry when touched while in ball-mode...

https://www.youtube.com/watch?v=NbzOkaCsQRc

>> No.8902576

>>8902572
what the actual fuck that's not even cute

>> No.8902617

>>8902278
Is this the epitome of those huge brain memes

>> No.8902642

>>8901775
"Of three ordinary people, two must have the same sex." D. J. KLEITMAN, quoted in the book Ramsey Theory

>> No.8902653

>>8902642
Woah dude

>> No.8902663

>>8902642
that's pretty cisnormative

>> No.8902665

"THE PAIN IN MY HEAD IS THE FUSION OF EGG AND SPERM, BUT IT ONLY TAKES A FATHER TO MAKE A BABY, THEN THE WORLD ENDS." took a psych elective over the summer and this a direct quote from the book (i think it was in all caps as i posted)

>> No.8902681

>>8902117
>Implies mathematics can discover universal structures outside our own universe

LAUGHING OUT LOUD

>> No.8902698
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8902698

>> No.8902703

>>8902698
D A N K

>> No.8902715
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8902715

>> No.8902728

>>8902475
Dan Fullerton also uses the frog in one of his videos. It's probably very real

>> No.8902744
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8902744

>>8901775

>> No.8902745

>>8902681
Physics can't either.
Here's a fun one, if mathematics can't do it, neither can physics, since physics is literally just applied mathematics. No, you playing with legos is not physics, you autistic mouthbreather.

>> No.8902788
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8902788

> "The people, unlike the land, were fertile..."

US history book from high school.

>> No.8902806

>>8902118
Fuck this fuck
I am mad

>> No.8902893

>>8902806
When an author does that he is basically saying: Here, my child. I have trained you well. I know trust you in being able to alone re-discover one of the important theorems in mathematical history so that you too can feel like the mathematician you will one day be.

When an author does that you should put your hand on your heart and sign the national anthem while crying as you can feel the author giving you the trust, space and respect your dad never gave you.

Wait, I mean my dad. Hopefully your dad also didn't love you.

>> No.8902897

>>8902489
I've got two of them

>> No.8902920
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8902920

>> No.8902924
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8902924

>> No.8903077

>>8902924
Amazing

>> No.8903079

>>8902893
My dad left me as an exercise to my mother.

>> No.8903085

>>8902893
kek, good post homie

>> No.8903096

>>8902893
I dislike this because I study math mostly alone and so it's hard for me to tell if I made or not a mistake in a proof.

>> No.8903110

>>8902715
was resolving singularities part of your plan?

>> No.8903125

>>8903079
Fuck that's even worse. But pretty funny post my main man.

>>8903096
What is keeping you away from getting a rigorous mathematical education? The only way you can become good at spotting problems in a proof is by getting shit at by a 60 year old professor who has been writing proofs for more than 4 decades and now expects you to in the few weeks he has been giving you the material to learn to write as rigorously as him.

>> No.8903175

> "We got an Hulk"

>> No.8903334

>>8902119
>Cells can't be more than a few micrometers in size
My first bio textbook was full of oversimplified and flat out wrong shit like this.

>> No.8903341
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8903341

>the proof is left to you as an excersize

>> No.8903389

>>8902642
Can you arrange a threesome so that it fulfills all of the following requiremets:
1. No person is homosexual.
2. No person condones the degeneracy of homosexuality.
3. No person gets cucked.

>> No.8903391

>>8901775
>I am a pretty big person for someone as yourself

>> No.8903413

>>8903391
Was being apprehended a premeditated action on your part?

>> No.8903415

>>8903389
>tfw working on the perfect threesome proof right now
FUG.

>> No.8903420

>>8903389
Spitroast a woman with a curtain over her midsection.
One blowjob, one penetration, neither male can see the other because of the curtain.
None of the three people are in any kind of serious relationship with any of the others

100% gay free, 100% cuck free

>> No.8903426
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8903426

>>8902665
>BUT IT ONLY TAKES A FATHER TO MAKE A BABY, THEN THE WORLD ENDS
What did they mean by this?

>> No.8903431
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8903431

>>8902715
Expanding this figure, WITH NO SURVIVORS!

>> No.8903529

>>8902642
it's still consistent with the special snowflake distinction between biological sex and muh feels gender

>> No.8903532

A while ago but I believe the quote is

"showing a blithe disregard for the arrangement of parentheses. "

- Spivak's calculus

>> No.8903660
File: 31 KB, 708x393, spivak2.png [View same] [iqdb] [saucenao] [google]
8903660

I don't know Spivak but he seems like a cool guy

>> No.8903662
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8903662

>> No.8903680
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8903680

>> No.8903752

Proof: Think

>> No.8903754

>>8903752
more authors ought to taunt their readers like this

>> No.8903761

>>8903754
Like the russians that leave all the proofs as an excercise for the reader

>> No.8903786

>>8902475
>>8902728
>But where did the frog — Dat Boi himself — originate? Not in AP Physics 1 Essentials, its author, Dan Fullerton, told me over the phone: “I was working on a problem about rotation. I thought the art was interesting, and so I made the problem about that.” Fullerton, who teaches high school physics, said he would ask his students about Dat Boi.
http://nymag.com/selectall/2016/05/dat-boi-frog-unicycle-3d-animation.html

>> No.8903805

>>8902745
Not everything in math will tell you the behavior of things in the real world. Say if you graph a sine wave, it will model the amplitude motion of the wave and other properties, but it still won't tell you things like what kind of a wave it is. The wave could be longitudinal or it could be transverse, and math wouldn't tell you that. There's a reason that they're separate disciplines. Math uses symbols to represent the logic and patterns behind everything but physics deals with the world directly. Physics isn't just applied math. It uses math to prove ideas and express things but it's a lot more than that

>> No.8903825

>>8903805
>physics deals with the world directly
you're trying to say something correct but failing terribly

>> No.8903840

>>8902806
It's teasing to get you to look up the exercise

>>8901775
The author wrote a series of book about the main domain of physics, undergrad/graduate level (Mechanics, Electromagnetism, Relativity, Thermodynamics, Quantum physics)

Every chapter he shills his other books, it's frustrating

>> No.8903860

>>8903805
Two words
Lagrangian mechanics

>> No.8904079
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8904079

>>8901775

>> No.8904084

>>8902715
Eisenbud&Harris?

>> No.8904105

>>8902893
My national anthem has no text. What to do?

>> No.8904115

>>8903680
nice

>> No.8904125

>>8904105
Give independence to Catalonia

>> No.8904134

>>8904125
Best post on this board right now.

>> No.8904162

>>8902497
Ježek sám sobě kadeřav.

>> No.8904188

>>8904162
Kráva zajíce nedohoní

>> No.8904392

>>8902920
Source?

>> No.8904442
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8904442

>> No.8904445
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8904445

>> No.8904451
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8904451

>> No.8904562

>>8902484
Kek

>> No.8904855

>>8903805
Physics is basically a pairing of observable quantities with symbols in equations. It will tell you what type of wave it is if you wrote down field equations for example.

>> No.8905035
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8905035

Not /sci/ related but anyways

>> No.8905041

>>8903662
I don't get it

>> No.8905054

>>8905041
He is citing both a famous Calculus textbook and some foreign book on basic algebra and geometry. Obviously one is much more advanced than the other.

>> No.8905059

>>8903125
>What is keeping you away from getting a rigorous mathematical education? The only way you can become good at spotting problems in a proof is by getting shit at by a 60 year old professor who has been writing proofs for more than 4 decades and now expects you to in the few weeks he has been giving you the material to learn to write as rigorously as him.


Because I live in a small city in Brazil and the closest to a decent math course that I could get was Software Engineering and all my teachers almost don't care for proofs.

>> No.8905068
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8905068

>>8901775

>> No.8905144

>>8905054
>EGA by Grothendieck
>just some foreign book on geometry

>> No.8905160

>>8902117
damn, pretty nice quote

>> No.8905263

>>8902212
Anyone else hold their breath while they read that?

>> No.8905271

>>8903389
>>8903420

Revision:
"If 4 men are fucking a woman, then two dicks must go in the same hole"

>> No.8905276

>>8905271
What about the earholes?

>> No.8905279

>>8905276
I was including both ear holes and the anus hole.

>> No.8905283

>>8902207
>rpms

GOD FUCKING DAMMIT THAT'S FUCKING WRONG YOU FUCKING FAGGOT NIGGER SPIC

>> No.8905331

>>8902715
This would have been funnier without the bane.

>> No.8905357

>>8905059
Lol, why dont you try Computer Science, everything related to graphs, finite automatas and etc would require some proof. It's very fun.
Also, what's your uni?
(Federal ou particular, eu sei q vc é br)

>> No.8905508

>>8902920
kek

>> No.8905568

>>8903660
The section on PDEs in Spivak's last volume is called "and now a word from our sponsors"

>> No.8905616

>>8905568
I dont get it

>> No.8905681

>>8905616
PDEs are a profitable application of differential geometry. Finance makes use of them and often hires mathematicians for this purpose. Hence sponsors.

>> No.8905811

>>8902117
Source ?

>> No.8907410

>>8905357
Because there isn't on the campus from my city.
It isn't federal or particular, it's the state university of Santa Catarina.
It does have Computer Science but I belive only in the city of Joinvile.
I went to Florianopolis to study at UFSC before and I got into a major depression unable to adapt to the life in a 'big' city. So since I feel unable to go to Florianopolis I think I also wouldn't be able to go to Joinvile.
(and for the record, the math teachers that I had at UFSC weren't that great either.)

>> No.8907949

>>8902788
them yeoman farmers man

they fucked

>> No.8908052

>>8902047
>>>/reddit.com/

>> No.8909084
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8909084

>>8905054
>and some foreign book on basic algebra and geometry.

>> No.8909146
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8909146

>>8901775
"we see from this"

Fuck Jackson, fuck him, fuck his book, i fucking hated that piece of shit and i still feel as if i don't know much about electrodynamics

>> No.8909865

>>8902698
>>8902715

gratuitous set theory cancer

>>8902924

Laughed out loud.

>>8909146

learn to derive shit BEFORE you read the book if you're going to read advanced material. they're not going to hold your hand. you're an adult, think like one.