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They don't wanna Talk about this very simple unsolved math: https://tinyurl.com/yd7okrue by Anonymous - Thu, 16 Nov 2017 11:42:57 EST ID:9RLAtG0r No.15585 Ignore Report Reply Quick Reply
File: 1510850577128.png -(478143B / 466.94KB, 1280x720) Thumbnail displayed, click image for full size. 478143
Here is the link to these secret problems: https://tinyurl.com/yd7okrue


Calc by Fry & Leela - Sun, 16 Jul 2017 12:43:38 EST ID:Rhgh4/nK No.15536 Ignore Report Reply Quick Reply
File: 1500223418101.jpg -(12838B / 12.54KB, 398x66) Thumbnail displayed, click image for full size. 12838
Can anyone tell me where to begin with this problem? I'm clueless. Our professor didn't cover it. I imagine start by taking d/dx and plugging the values in at some point?
Thanks
>>
Cyril Clugglefoot - Mon, 17 Jul 2017 18:43:04 EST ID:tgwdoW8d No.15537 Ignore Report Quick Reply
So... when the derivative crosses the y-axis, that means that your function, x2x-ex, there has changed directions. So that means that ANY time your d/dx crosses the y-axis, it creates a "local" maximum value, which may not be the overall actual max peak.

I believe you:
  • find the derivative
  • find the zeros (what's that process called again?), i.e. solve for zero
  • plug in each x value you found into the original function, x2e-x -> compare all y values to find the greatest


Correct me if I'm wrong, it's been 3 years.
>>
Fuck Murdridge - Tue, 18 Jul 2017 16:12:50 EST ID:XBxBdy5C No.15538 Ignore Report Quick Reply
>>15537

Pretty much this, but check the values at the endpoints of the interval too not just at local Mac/mins.
>>
Martha Hellyford - Wed, 19 Jul 2017 00:10:34 EST ID:cezjQDuj No.15540 Ignore Report Quick Reply
>>15537
>So that means that ANY time your d/dx crosses the y-axis, it creates a "local" maximum value
Oops, I meant
>creates a "local" max OR min value, i.e. just a peak/trough somewhere
It's only a max if the derivative's slope is negative around that zero
>>
Jack Bimmleshit - Sat, 11 Nov 2017 17:51:42 EST ID:y7H0hQp+ No.15583 Ignore Report Quick Reply
>>15540
or, an inflection point if f''(x) = 0


Hey Neeeeerd by Alice Bleffingford - Sun, 23 Jul 2017 18:23:32 EST ID:n3nShEOS No.15542 Ignore Report Reply Quick Reply
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Why do you post here? Wouldn't it be easier to go to a forum or something that is specifically created for mathematics discussion? Why do you post here and wait like 4 weeks for a reply from some stoned hippy when you can go somewhere else for quicker and more informed input?
3 posts and 1 images omitted. Click Reply to view.
>>
Clara Dartman - Mon, 07 Aug 2017 05:41:18 EST ID:IYDdeQTK No.15546 Ignore Report Quick Reply
>>15544
Pretty sure the IRC is an acceptable workaround for the no hookups rule and if you guys wanted you could all get some messaging service that would be a lot faster and more direct to collaborate on maths.
>>
Isabella Blatherson - Fri, 11 Aug 2017 10:36:54 EST ID:GTsdVIEf No.15549 Ignore Report Quick Reply
>>15545
I reckon it didn't go back to 79 the following minute.
>>
Phineas Turveyhood - Sat, 21 Oct 2017 02:58:05 EST ID:mDdoWUWV No.15574 Ignore Report Quick Reply
I respect hippies' input on math.
>>
Cornelius Pullermotch - Sun, 22 Oct 2017 21:27:56 EST ID:A8rh+RAv No.15575 Ignore Report Quick Reply
I post here for the same reason I do drugs with hippies and try to teach them about infinity.
>>
Priscilla Blucklewit - Fri, 10 Nov 2017 02:54:44 EST ID:m52FE4m4 No.15582 Ignore Report Quick Reply
>>15543
the other boards actually get traffic

i thought math nerds were supposed to be smart guess not LOL


Visually Understanding Math by Shit Blangertere - Tue, 17 Jun 2014 06:57:11 EST ID:RLkenDTl No.14091 Ignore Report Reply Quick Reply
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Hi guys,

Wondering if anyone could point me to an introductory level book on Math that teaches primarily by showing how to visualise the math so that I can understand HOW it works (as opposed to just memorising the equations/procedures and accepting that they work).

I'm thinking of going Feynman's Lectures atm, but am wondering if there's something better you guys might recommend.

Again, would like it to start at the very basics if possible.

Thanks and Jesus.
3 posts omitted. Click Reply to view.
>>
Sophie Blackhood - Tue, 29 Aug 2017 01:36:00 EST ID:m52FE4m4 No.15554 Ignore Report Quick Reply
>>14091
Source on the pic OP?
>>
Cyril Duvingbug - Thu, 07 Sep 2017 19:20:05 EST ID:m52FE4m4 No.15557 Ignore Report Quick Reply
>>14091
I need a source on this fucking picture.
>>
Polly Sungershit - Wed, 20 Sep 2017 18:08:15 EST ID:m52FE4m4 No.15564 Ignore Report Quick Reply
>>14091
SOURCE
>>
Lydia Wullyshaw - Mon, 02 Oct 2017 02:46:29 EST ID:Xel5TJuB No.15573 Ignore Report Quick Reply
The source is from Gizmodo's "sexy robot costume" contest 2010:
https://gizmodo.com/5664139/gizmodos-sexy-robot-costume-contest
>>
Priscilla Blucklewit - Fri, 10 Nov 2017 02:53:11 EST ID:m52FE4m4 No.15581 Ignore Report Quick Reply
>>15573
thanks bro


absolutely perfect resolution by discovery - Mon, 06 Nov 2017 21:35:10 EST ID:5rRuxZsJ No.15579 Ignore Report Reply Quick Reply
File: 1510022110016.png -(22781B / 22.25KB, 777x486) Thumbnail displayed, click image for full size. 22781
golden ratio
>>
Albert Brookwater - Tue, 07 Nov 2017 12:00:57 EST ID:BDm+BNlx No.15580 Ignore Report Quick Reply
>>15579

beautiful


I'm an autistic by Sophie Crovingspear - Sun, 05 Nov 2017 03:47:19 EST ID:aO21Ekyq No.15577 Ignore Report Reply Quick Reply
File: 1509871639668.png -(1048491B / 1023.92KB, 651x618) Thumbnail displayed, click image for full size. 1048491
I am taking a class in abstract algebra and was getting ready for a test and noticed a pattern that has popped up when shows how to represent all polynomial functions in a ring that map from Zmodn to Zmodn. What I (think) I found is pretty much why when you have some value x^n it can be replaced with x etc. Pretty much showing why there is only one way to represent all the functions withing the ring due to not being able to have any x raised to something larger than n-1
>>
Reuben Drucklenire - Sun, 05 Nov 2017 16:13:48 EST ID:pjkjVzRP No.15578 Ignore Report Quick Reply
https://en.wikipedia.org/wiki/Fermat's_little_theorem

Also, if n=4 then 2^4=16=0 but 0 is not 2. You can only do your trick when k and phi(n) are coprime.


Oh fuck. by Poor faggot - Sun, 10 Sep 2017 05:38:52 EST ID:8UKf4f6U No.15559 Ignore Report Reply Quick Reply
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Just entered college and put my major down as math.
I haven't fucking done math in years. I dropped out! I fucking dropped out because I thought fuck high school, college is where its at. Now I'm fucking here and i have no clue what I'm doing.
Tips?
Picture is a latern I stole from a meth-head while he was in jail. Its my finest decoration in my dorm.
1 posts omitted. Click Reply to view.
>>
.... - Sat, 23 Sep 2017 14:52:29 EST ID:hw7QDM7l No.15568 Ignore Report Quick Reply
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you can just change your major and if your college offers free tutoring sessions then i suggest you take it until you have a firm understanding of whatever it is your trying to learn
>>
Phyllis Bonderdock - Sat, 23 Sep 2017 21:02:36 EST ID:GW5uULCD No.15569 Ignore Report Quick Reply
sounds hard better quit
>>
James Fuckingspear - Sun, 24 Sep 2017 16:33:03 EST ID:lYjTKStM No.15570 Ignore Report Quick Reply
As somebody who dropped out of studying math after 3 months, don't sweat it.

That said high school math is very different to academic math. You won't be learning calculus or algebra, at least not at the uni.
However you learn about proofs, what you need them for different kinds of proofs and how they are done. You'll need some algebra to follow the exercises and examples, but nothing really substantial.
But you might discover that Math in it's academic form is an ivory tower and if you want to do anything but being a researcher you'd have to find your own interests to do something financially worthwhile in life, which will be if you really like math seem stale in comparison.

If you want to learn something exciting that relates to the real world get out asap.
>>
James Fuckingspear - Sun, 24 Sep 2017 16:37:19 EST ID:lYjTKStM No.15571 Ignore Report Quick Reply
Not that math isn't exciting, it's the most powerful science in existence. But you need to be pretty smart to archive something in it. (By that I mean coming up with a new conjecture or proving a theorem)
>>
Jack Soddleson - Mon, 25 Sep 2017 03:37:41 EST ID:+lsSrhgb No.15572 Ignore Report Quick Reply
>>15570

An undergraduate degree in math almost always requires taking a sequence of calculus classes that lead in to proof based math. There are many people that get undergraduate degrees in mathematics that go on to work in the private sector successfully. It is inaccurate to say it's in ivory tower field, that is only accurate if you want to become a professional math researcher, which even a large portion of those with math doctorates don't pursue after their thesis.

OP if you're interested in math stick with it. There are jobs out there for people with math aptitude. You will probably have to learn how to program.

Math related jobs are high satisfaction because they generally pay decently and the process of learning various fields of mathematics can be really mentally rewarding depending on your personality.

On the other hand, if you want a more streamlined career progression that follows a pipeline you may want to choose a more professional style of program. If you study math and don't want to become the ivory tower researcher, at some point there is a transition you have to make in to doing real world things that causes even the most intelligent people to "fall off the wagon" sometimes.


Pleb Contemplates Curvature by Pleb - Mon, 23 May 2016 14:22:48 EST ID:BB0KLoxX No.15128 Ignore Report Reply Quick Reply
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I am certain i am missing information so i appeal to you brainy smarties to educate me However this also may be a physics questions. I dunno.

Do curves actually exist? Meaning at the smallest point possible (I would assume planck length) would it not be a straight line from point A to point B then a second straight line from point B to point C etc etc? Only upon pulling back far enough to no longer see the individual points does the curve appear?
34 posts and 4 images omitted. Click Reply to view.
>>
David Sobberford - Tue, 12 Sep 2017 20:56:49 EST ID:KoXeDG6b No.15562 Ignore Report Quick Reply
I'm pretty distraught to see people trying to answer a mathematics question with physics.
To answer OP's question:
In mathematics, yes curves exist all the time.
In physics, depends which physicist you ask.
>>
Wesley Crecklebot - Thu, 14 Sep 2017 23:14:27 EST ID:kSqLGZD/ No.15563 Ignore Report Quick Reply
>>15562

The reason that people do math is that there is some hope it corresponds to reality... The issue is whether the mathematical reality corresponds to what is "out there"
>>
Graham Bennernotch - Fri, 22 Sep 2017 18:49:55 EST ID:F95jr/F4 No.15565 Ignore Report Quick Reply
>>15505
Any model of reality discussed in language is "sort of" discrete because language is a discrete medium. However, to the extent that language can describe the idea of continuity at all, it can also encode it in a model of reality, so there is no comprehensible sort of continuousness which cannot also be a property of the Universe. As such it makes no sense to argue that the Universe is discrete because the models are discrete, because "the models are discrete" is not a meaningful statement: all possible models are discrete because the means of communicating them is discrete. Effectively the argument becomes that no continuous universe could contain beings which communicate about said universe in a discrete language, which is clearly silly.
>>
Graham Bennernotch - Fri, 22 Sep 2017 18:53:45 EST ID:F95jr/F4 No.15566 Ignore Report Quick Reply
>>15565
But the setting for qft is R^n (and also C^n) and uses the axioms of real fields which are the "best" mathematical expression of continuity known. If that's not a continuous universe then it isn't possible to talk rigorously about what is
>>
Hannah Bardshaw - Sat, 23 Sep 2017 08:29:57 EST ID:lYjTKStM No.15567 Ignore Report Quick Reply
>>15565
Calculus is an excellent "language" to describe a continuous real world property.


Complex Analysis by Hamilton Dosslemene - Tue, 08 Aug 2017 21:15:47 EST ID:2Nfpe0g9 No.15547 Ignore Report Reply Quick Reply
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Can somebody explain to me why I need to take a Complex Analysis class?

I'm doing a MS Mathematics and going on to a PhD in Statistics/Probability

I don't see any fucking point in studying Complex Anal.
>>
Ebenezer Demblekere - Thu, 10 Aug 2017 15:15:33 EST ID:gFrVWF8h No.15548 Ignore Report Quick Reply
>>15547

Are you sure you have to take that specific class? At my university there are distribution requirements, where you might have to take a year of some type of analysis class. Maybe you can change the MS program you are enrolled in to an applied math MS where the requirements are different. Even then, complex analysis is a branch of math that has a lot of real world uses, it's not like this is a class on Galois theory.

Here you are required to take 2 semesters of regular analysis, but not the complex.
>>
Walter Davinglock - Mon, 11 Sep 2017 09:56:07 EST ID:wdbZy6Bd No.15560 Ignore Report Quick Reply
>>15548
Yeah...actually I tried not taking it and my advisor said I have to.

Tbh now that I'm in the class it ain't bad. But I wanted to take a statistical theory course and own i cant.


What's the biggest number? by Nathaniel Sacklespear - Fri, 23 Sep 2016 09:54:08 EST ID:XssdERJk No.15209 Ignore Report Reply Quick Reply
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Assume we had all the possible methods of information storage in the universe and all the resources of the universe at our whimsical disposal.

What's the largest number we could put down in some kind of recording before we ran out of universe?

So I guess the core question I'm asking is what's the most compact way to write large numbers? Is there anything that beats out scientific notation? And what's the greatest extreme to which we could conceivably take this?
27 posts and 3 images omitted. Click Reply to view.
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Martin Surrywell - Thu, 29 Jun 2017 15:08:20 EST ID:h0vIir1X No.15532 Ignore Report Quick Reply
>>15209
hiffwe
>>
Wesley Feshham - Fri, 25 Aug 2017 23:59:07 EST ID:Kt7gF4g2 No.15551 Ignore Report Quick Reply
>>15209
Infinity is the closest truthful answer you will get. It's incomprehensible. The lie you'd get is a guesstimation based off of a simulation which will undoubtedly have confounding variables, variables not considered, etc.
>>
Molly Blimmerdock - Sat, 26 Aug 2017 19:59:57 EST ID:gFrVWF8h No.15553 Ignore Report Quick Reply
>>15551

Given any infinite ordinal there is a larger one. Given any infinite value, you can construct a larger one.
>>
Eliza Blackworth - Tue, 29 Aug 2017 19:44:00 EST ID:z6ik/LbC No.15555 Ignore Report Quick Reply
>>15551
>It's incomprehensible.

For you maybe. Thousands of people have a solid understanding of infinity.
>>
Matilda Clipperhood - Sat, 09 Sep 2017 10:23:22 EST ID:vnPM6s0z No.15558 Ignore Report Quick Reply
>>15209
tree fiddy


Getting into Physics ---> Quantum stuff by Beatrice Sepperhall - Thu, 21 Aug 2014 13:14:21 EST ID:t/8wjLF3 No.14296 Ignore Report Reply Quick Reply
File: 1408641261077.jpg -(125896B / 122.95KB, 1200x930) Thumbnail displayed, click image for full size. 125896
Where should I start? Should I learn a bunch of calculus first? I was recommended University Physics With Modern Physics (Young & Freedman) to start with and then to move to Quantum Mechanics (Bransden & Joachain). At least to start off with.

Any other recommendations or whatever? Besides college and stuff, just on maybe the order you began learning it or w/e? thanks.
5 posts omitted. Click Reply to view.
>>
Hamilton Docklekane - Tue, 02 Sep 2014 22:21:50 EST ID:n1HpAHmU No.14344 Ignore Report Quick Reply
>>14341
I personally think the study of differential equations is more important to have down before the linear algebra when learning the basics of QM, because then you can get a feel for what Shrodinger's equation is saying, but there is much debate on the proper pedagogy for teaching it. Vibrations and Waves by French is my personal choice for learning diff eq.s and linear algebra/ their applications to physics all in one nice bundle. Also Mathematical Methods in the Physical Sciences by Boas has been a life saver for soooo many areas in physics. I still keep my copy of it from sophomore year in college on my bookshelf.
>>
Archie Worthingfield - Sun, 07 Sep 2014 18:26:47 EST ID:xvgqavvT No.14354 Ignore Report Quick Reply
Here ya go, a full list of exactly what you need to be a good theoretical physicist
http://www.staff.science.uu.nl/~Gadda001/goodtheorist/index.html

Many of the links don't work anymore, so substitute with MIT Open Courseware lectures on Math/Physics or whatever modern books you can find. http://ocw.mit.edu/courses/physics/8-05-quantum-physics-ii-fall-2013/video-lectures/
>>
Barnaby Brellyhick - Sat, 20 May 2017 21:48:22 EST ID:EJeHrwkJ No.15507 Ignore Report Quick Reply
>>14296
Write a paper suggesting a link between chemistry and physics
>>
Martin Murdman - Mon, 19 Jun 2017 22:10:21 EST ID:q/daWEW+ No.15522 Ignore Report Quick Reply
>>14296
Learn calculus, differential equations, linear algebra, and abstract algebra/group theory. Read Quantum Mechanics by Shankar. When they start about euler lagrange equations as a way of doing classical mechanics problems check out Give Taylor's Classical Mechanics.

If you want to go deep the Landau Lifshitz books are essential. Griffith has a good E&M book if you are only interested in learning enough E&M to do advanced quantum. Gordon Baymn's lectures on quantum are really dense, but really well summarize the most essential aspects of quantum, and teach you how to solve some really practical problems (spectroscopy/scatter/super conductivity class shit). Messiah's and Sakurai's textbooks are each good in their own ways.

take acid
>>
Jack Brookham - Sat, 26 Aug 2017 12:25:01 EST ID:wgTUzquz No.15552 Ignore Report Quick Reply
You need calc 1 and maybe calc 2 (techniques of integration) for undergrad level physics books (specifically Newtonian mechanics and Electromagnetism). I used University Physics which you mention and Fundementals of Physics by Halliday and Resnick, either will do (get an old edition for cheap) but I personally liked University Physics more.

As for QM you'll need linear algebra and differential equations, both of which you should study after calculus. I'd recommend getting an old edition of Calculus by Stewart, Spivak might be too much if you've never seen calculus or if your algebra and trig is weak. Undergrad math textbooks are generally shitty money grabs, and MIT has some of their's up for free.

For other book suggestions I'd recommend looking at a university's physics courses and their respective syllabi.


how i relearned erry mathsz by Lydia Lightshit - Fri, 05 Feb 2016 02:37:19 EST ID:mVsq12K/ No.15040 Ignore Report Reply Quick Reply
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Everyday before work, I woke up 2 hours early and forced myself to read/do exercises of the following books. (this later became 3 hours). I averaged 3 books per month if they were survey books, and about 1-3 months for a rigorous book. This became an easy routine after the first week, and I'm still doing this.

>1) Daily Rituals by Mason Currey
https://books.google.ca/books/about/Daily_Rituals.html?id=hA-MoAEACAAJ
This is where I got the idea of making a routine from, it's a survey of historical artists, philosophers, scientists ect who all had a routine in order to get work done consistently. Franz Kafka would split his sleep up into 2 section in order to fit in work beside his regular office job.

>2) Basic College Mathematics by M. Lial et all
https://books.google.ca/books?id=ucUDMAEACAAJ&dq=basic+college+mathematics
As mentioned before in here this covers elementary school and Jr. High math basically. You can just survey this for the most part (not do any exercises) unless you don't understand something, then do the exercises. Took 3 days to survey this. When I later took Harvard's CS50 computer science course, the first lecture about Binary numbers directly was related to this book's first chapter on whole numbers. I torrented this book.

>3)Basic Mathematics by Serge Lang
https://books.google.ca/books?id=gBtvo480ng4C&dq=basic+mathematics
I got out the notepaper and did most of the exercises by hand. This was all focused on reasoning, why is this true, how do we prove this is true, ect. This book teaches you so well that applied calculus is your bitch afterwards. I torrented this book too since author dead, copies are like $80 on amazon.

>4)Introduction to Mathematical Reasoning by Eccles
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Frederick Wicklesadging - Wed, 18 Jan 2017 12:25:37 EST ID:bkgMqk62 No.15326 Ignore Report Quick Reply
>>15324

That's a slow pace, but good. I think if you are reading three math books in a month you are missing a lot of details. It took me a year to read Shoenield's mathematical logic and I have been reading Kunen's set theory for a year nearly and I'm only half way through. Shit takes time.
>>
Emma Drundlestock - Mon, 06 Feb 2017 13:38:21 EST ID:0v0QG0m/ No.15330 Ignore Report Quick Reply
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>>15326
>That's a slow pace,
Yes, I know it. That's because I got my bachelor degree in maths but never studied it seriously until now, that I have noticed my lack of foundations; and it's because of that that I don't go on unless I'm pretty sure I have solved and understood every single part of the text and the problems, specially set theory and logic, wich are basic for all mathematics. Solving all the doubts arising when studying mathematics is a very important part of our study routine if one really wants to understand them... and it's probably the most tedious part.

>Shoenield's mathematical logic
I'd swear it was a model theory book. I remember I didn't buy it due to that, and bought Richard E. Hodel's An Introduction to Mathematical Logic instead.
>>
Jarvis Pessledale - Tue, 14 Mar 2017 17:19:17 EST ID:ueMHQ1BO No.15419 Ignore Report Quick Reply
>>15040
sick, now read a Math physics textbook and become a god
>>
George Blatherbanks - Sat, 18 Mar 2017 16:35:05 EST ID:ck7N7PYR No.15422 Ignore Report Quick Reply
Frankel's The Geometry of Physics: A very good way to learn what modern geometry tastes like.
>>
Albert Bivinghall - Tue, 22 Aug 2017 03:01:37 EST ID:OVoqDNaY No.15550 Ignore Report Quick Reply
bump


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