## Search found 107 matches

- Wed Feb 06, 2013 11:25 pm UTC
- Forum: Comics/Graphic Novels
- Topic: What happened to Abstruse Goose?
- Replies:
**9** - Views:
**22777**

### Re: What happened to Abstruse Goose?

Well he likes his privacy, so we can respect that. I'm just glad he's got his blue cap back on.

- Thu Apr 19, 2012 8:38 am UTC
- Forum: Mathematics
- Topic: Math Books
- Replies:
**378** - Views:
**253592**

### Re: Math Books

I've heard great things about their books on complex & Fourier analysis (the one on functional analysis just recently came out, so I don't know anything about it), but the real analysis text is not particularly good. If you want an introduction to Lebesgue integration & measure theory, Royde...

- Wed Mar 30, 2011 5:59 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0879: "Lamp"
- Replies:
**151** - Views:
**33776**

### Re: 0879: "Lamp"

xkcd reaches a new low of crassness & mediocrity. :(

- Fri Mar 25, 2011 8:27 pm UTC
- Forum: Mathematics
- Topic: Ever felt "off your game" mathematically?
- Replies:
**15** - Views:
**2417**

### Re: Ever felt "off your game" mathematically?

achan1058 wrote:Welcome to grad school?

And remember that almost everyone else feels exactly the same way. Don't let impostor syndrome get you down, but don't use it as an excuse not to study like crazy either.

- Tue Mar 22, 2011 4:02 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0875: "2009 Called"
- Replies:
**111** - Views:
**51207**

### Re: 0875: "2009 Called"

I'm unsure whether to think this clever or a bit of a 'too soon, man' thing.

- Sun Mar 06, 2011 4:47 am UTC
- Forum: Mathematics
- Topic: Binary representtion of prime numbers
- Replies:
**15** - Views:
**6450**

### Re: Binary representtion of prime numbers

Things like AKS (deterministic) & Miller-Rabin (even faster, but only known to be probabilistic until the generalized Riemann hypothesis is settled) generally come about through the very method which is used to prove their reliability; so yes, these primality tests have proofs.

- Wed Mar 02, 2011 5:03 am UTC
- Forum: Mathematics
- Topic: Copy :Does anybody knows why people always pick number 3???
- Replies:
**28** - Views:
**5072**

### Re: Copy :Does anybody knows why people always pick number 3

e.

A counterexample.

A counterexample.

- Wed Feb 16, 2011 5:36 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0861: "Wisdom Teeth"
- Replies:
**116** - Views:
**25929**

### Re: 0861: "Wisdom Teeth"

I enjoyed the alt-text.

- Sun Jan 09, 2011 10:30 pm UTC
- Forum: Mathematics
- Topic: Did we invent or "discover" math?
- Replies:
**3** - Views:
**1794**

### Re: Did we invent or "discover" math?

The problem is that, unless you invent certain axioms which make it true, the sum of the interior angles of a triangle is not [necessarily] 180 degrees. It's true in Euclidean geometry, but that requires the creation of certain axioms.

- Fri Jan 07, 2011 8:13 pm UTC
- Forum: Mathematics
- Topic: Real numbers and uncountability.
- Replies:
**29** - Views:
**2842**

### Re: Real numbers and uncountability.

skeptical scientist wrote:Seriously, have you ever seen a definition of "set" which both made intuitive sense and was free from paradox?

I've never seen a satisfactory definition of any logical primitive, in that sense. And I agree that consistency is actually a relatively weak claim to make.

- Fri Jan 07, 2011 7:14 am UTC
- Forum: Mathematics
- Topic: Real numbers and uncountability.
- Replies:
**29** - Views:
**2842**

### Re: Real numbers and uncountability.

When you say unambiguous, do you mean anything more than the basic properties associated with natural numbers? Because I should think any logicist development of the natural numbers provides a non-circular construction (at least once you get past the informal language) which is sufficient to do numb...

- Fri Jan 07, 2011 5:09 am UTC
- Forum: Mathematics
- Topic: Where to start studying math?
- Replies:
**13** - Views:
**2763**

### Re: Where to start studying math?

Since elementary number theory (note that 'elementary' does not mean it's always easy) is very accessible, especially with what you've already covered, and since you've got a computer science background, you might find the applications of number theory to cryptography quite interesting. Either way, ...

- Thu Jan 06, 2011 9:14 am UTC
- Forum: Mathematics
- Topic: Can anyone explain forcing to me?
- Replies:
**3** - Views:
**791**

### Re: Can anyone explain forcing to me?

That's a pretty great explanation for a single post! I haven't had time to read either of these, but a couple of books that you might try are the original Paul Cohen book, Set Theory & the Continuum Hypothesis (cheap & Dover), and Kenneth Kunen's Set Theory: An Introduction to Independence P...

- Fri Dec 31, 2010 5:53 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0841: "Audiophiles"
- Replies:
**266** - Views:
**47241**

### Re: 0841: Audiophiles

This is the best comic Randell had in a long while.. I literally laughed out loud. This comic was funny to me even tho I read it on an old CRT monitor, take that videophiles. CRTs are still better for a lot of things, especially if you're using them for gaming. 320kbps is absolutely pointless- you'...

- Thu Dec 30, 2010 4:53 am UTC
- Forum: Mathematics
- Topic: Math Books
- Replies:
**378** - Views:
**253592**

### Re: Math Books

I think you might be panicking prematurely, especially with the background you already have.

Edit: If you want a slower paced book for reference, Brown & Churchill's Complex Variables with Applications is excellent, though it has different ordering of topics.

Edit: If you want a slower paced book for reference, Brown & Churchill's Complex Variables with Applications is excellent, though it has different ordering of topics.

- Fri Dec 17, 2010 10:00 am UTC
- Forum: Mathematics
- Topic: Strange integral
- Replies:
**11** - Views:
**1735**

### Re: Strange integral

What's even stranger, is that a similar function, called Thomae's function , is Riemann integrable! f(x)= \begin {cases} \frac{1}{q} & \text{if } x=\frac{p}{q} \text{ is rational} \\ 0 & \text{if } x \text{ is irrational} \end{cases} This function is discontinuous only at rational po...

- Mon Dec 13, 2010 5:24 am UTC
- Forum: Mathematics
- Topic: Modern Cryptanalysis
- Replies:
**12** - Views:
**3836**

### Re: Modern Cryptanalysis

Many a cryptosystem has been broken simply because the designers thought that they can keep the details a secret. The cryptosystem used on DVDs by the commercial parties failed for this reason (and they didn't consult any real cryptographers). DRM in general is easier to crack, and will never be se...

- Mon Dec 13, 2010 5:05 am UTC
- Forum: Mathematics
- Topic: Crazy numbers
- Replies:
**17** - Views:
**3499**

### Re: Crazy numbers

Ooooh, those are synonymous with the perplex numbers. Very fun stuff. Many of the properties of the surreal numbers also hold when you disregard the restriction that the elements of the left set must be less than all the elements of the right set. Conway calls these objects 'games', although Knuth j...

- Tue Dec 07, 2010 2:59 am UTC
- Forum: Mathematics
- Topic: Putnam 2010!
- Replies:
**12** - Views:
**3135**

### Re: Putnam 2010!

You can get B5 by noticing that f is infinitely differentiable (though you'll only make use of the 2nd derivative) because each derivative can be written as a composition/product of f. Then since f' > 0 everywhere, you can write f' = e^h for some continuous function h, which you know nothing of---ex...

- Wed Nov 24, 2010 5:38 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0824: "Guest Week: Bill Amend (FoxTrot) "
- Replies:
**127** - Views:
**30575**

### Re: 0824: "Guest Week: Bill Amend (FoxTrot) "

Calvin is clearly biased. All the works whose primary form was a painting were high art, and all those whose primary form was a comic were low art. (This is strange because Calvin likes comics.) Calvin was only a devise for satire. Bill Waterson's comic is clearly some of the greatest art out there...

- Wed Nov 24, 2010 5:28 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0824: "Guest Week: Bill Amend (FoxTrot) "
- Replies:
**127** - Views:
**30575**

### Re: 0824: "Guest Week: Bill Amend (FoxTrot) "

black_hat_guy wrote:Well, when you think about it, the first strip is a Foxtrot strip inside an xkcd strip, and the rest are xkcd strips inside Foxtrot strips inside xkcd strips. That seems to be in the spirit of xkcd.

"An xkcd inside a FoxTrot, inside an xkcd. Low art." ~Calvin

- Wed Nov 24, 2010 5:03 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0824: "Guest Week: Bill Amend (FoxTrot) "
- Replies:
**127** - Views:
**30575**

### Re: 0824: "Guest Week: Bill Amend (FoxTrot) "

Most excellent! :)

It's great to have a real FoxTrot strip, and even better that it's also an xkcd.

It's great to have a real FoxTrot strip, and even better that it's also an xkcd.

- Wed Nov 17, 2010 5:22 am UTC
- Forum: Mathematics
- Topic: Continuum Hypothesis
- Replies:
**14** - Views:
**1791**

### Re: Continuum Hypothesis

phlip wrote:Not a pretty function, but still a bijection.

I actually quite liked it.

- Sun Nov 14, 2010 4:48 am UTC
- Forum: Mathematics
- Topic: How difficult is a Real Analysis class?
- Replies:
**79** - Views:
**19422**

### Re: How difficult is a Real Analysis class?

bitsplit wrote:[Analysis] was, however, one of the most rewarding experiences in my undergraduate adventures, along with Number Theory.

I'm quoting this to add emphasis.

- Sun Nov 14, 2010 4:42 am UTC
- Forum: Mathematics
- Topic: Tips for how to study undergrad math the right way?
- Replies:
**32** - Views:
**3556**

### Re: Tips for how to undergrad math studies the right way?

It's always a good idea to read some mathematics on your own time. Being familiar with a bit of analysis or abstract algebra before taking a rigorous course in either subject, for example, is always a good idea. Knowing alternative approaches to the same area of mathematics can lend some (often much...

- Fri Oct 29, 2010 4:57 am UTC
- Forum: Mathematics
- Topic: Math Books
- Replies:
**378** - Views:
**253592**

### Re: Math Books

Introduction to Analysis by Maxwell Rosenlicht is a cheap little Dover book, and it has more explanatory power than baby Rudin. Or you could just try to work through the two Rudin books. (Or Royden for Lebesgue integration/measure theory)

- Mon Sep 13, 2010 12:48 am UTC
- Forum: Mathematics
- Topic: Proving a function analytic
- Replies:
**6** - Views:
**4997**

### Re: Proving a function analytic

Well for complex functions it's easier, isn't it? Exactly because complex differentiable and analytic coincide. It seems it would be much harder for functions from R to R? Depending on your meaning with the word 'coincide', we should be careful to add that there are complex functions differentiable...

- Sat Sep 11, 2010 6:23 pm UTC
- Forum: Books
- Topic: Kindle, Nook, E-Reader and other Ebooks
- Replies:
**106** - Views:
**25358**

### Re: Kindle, Nook, E-Reader and other Ebooks

Ordinarily I'd agree (my house is full of such makeshift products---for instance, a turntable hinge replaced by Knex), but among the Nook cases is one that reads as the first page of Alice's Adventures in Wonderland. Which is something you can also see on the Kindle beneath it.

- Fri Sep 10, 2010 5:04 am UTC
- Forum: Books
- Topic: Kindle, Nook, E-Reader and other Ebooks
- Replies:
**106** - Views:
**25358**

### Re: Kindle, Nook, E-Reader and other Ebooks

Kindle 3 acquired & awesome. It is most excellent.

Anyway, just thought I'd mention here (B&N had a sale on accessories today) that the Kindle 3 is small enough to fit snuggly into Nook cases, which tend to be a bit cheaper.

Anyway, just thought I'd mention here (B&N had a sale on accessories today) that the Kindle 3 is small enough to fit snuggly into Nook cases, which tend to be a bit cheaper.

- Tue Aug 31, 2010 4:47 am UTC
- Forum: Mathematics
- Topic: Math Books
- Replies:
**378** - Views:
**253592**

### Re: Math Books

I thought it very strange that new concepts were taught in brief paragraphs in the problem sets.

- Wed Aug 25, 2010 4:43 am UTC
- Forum: Mathematics
- Topic: Help me name my (mathsy) pottery business.
- Replies:
**15** - Views:
**3251**

### Re: Help me name my (mathsy) pottery business.

Topfology if you have any German customers...?

- Wed Aug 18, 2010 7:59 pm UTC
- Forum: Mathematics
- Topic: Favorite math jokes
- Replies:
**1452** - Views:
**468738**

### Re: Favorite math jokes

Bruenor wrote:The mathematician calmly replied, "Have patience. I'm just a simple pole in a complex plane."

I am so using this! :]

- Wed Jul 28, 2010 9:46 pm UTC
- Forum: Mathematics
- Topic: Thank you for #435
- Replies:
**42** - Views:
**5021**

### Re: Thank you for #435

There's also a webcomic (sadly ended now) entirely about mathematics & written by a female graduate student.

http://brownsharpie.courtneygibbons.org/

The "You haven't earned the right!" shirt always gathers laughs when I walk through the math building. (& puzzlement anywhere else)

http://brownsharpie.courtneygibbons.org/

The "You haven't earned the right!" shirt always gathers laughs when I walk through the math building. (& puzzlement anywhere else)

- Tue Jul 27, 2010 4:04 am UTC
- Forum: School
- Topic: What is/was your college GPA?
- Replies:
**64** - Views:
**9887**

### Re: What is/was your college GPA?

I currently have a 3.88/4.00 over exactly 100 credit hours & will soon finish my BS in Pure Mathematics at the University of Texas at Austin. I think it's worth noting that three of the four B's factored into that came during high school while dual enrolled at the community college. But it's pro...

- Mon Jul 19, 2010 4:37 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0768: "1996"
- Replies:
**190** - Views:
**52550**

### Re: "1996" Discussion

I picked up a TI-Nspire on the cheap a few years ago, and the display resolution is much nicer. I never read the manual, so I still haven't figured out how to graph things with it, but it's been most helpful for matrix iteration. And if they had existed back when I first learned integration, I'm sur...

- Fri Jul 16, 2010 3:51 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0767: "Temper"
- Replies:
**159** - Views:
**41422**

### Re: "Temper" Discussion (#767)

I have very good memories of his show. It was like a child's History Channel. (At least the parts of the History Channel that cover real history & how stuff works)

- Wed Jul 14, 2010 4:39 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0766: "Green Flash"
- Replies:
**82** - Views:
**23484**

### Re: "Green Flash" Discussion

BytEfLUSh wrote:Looks like a bottle to me :)

Bottle?! Then hittin' him's self-defense, idn' it?

EDIT: Also, I totally thought Pirates of the Caribbean just made that up about a green flash at sunrise/set. Physics just gets cooler & cooler. :]

- Fri Jul 09, 2010 4:09 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0764: "One Two"
- Replies:
**348** - Views:
**68147**

### Re: " One Two" Discussion

A slam against anthropologists in the mouse-over, eh? But anyway it seems to bring good news. As "real science" is based on philosophy, I'll go ahead and assume that Randall will bow to our superiority. You philosophers think that you are important, therefore you are? But in reality, I ca...

- Mon Jul 05, 2010 3:51 am UTC
- Forum: Food
- Topic: Should I Go Vegan Again?
- Replies:
**48** - Views:
**6994**

### Re: Should I Go Vegan Again?

I'm a vegetarian (a damn healthy one---my doctor went out of his way to compliment me on my blood work) living in the very vegan-friendly city of Austin, and I think it's silly for a person to be vegan. The level of dietary supplement required when you're not consuming eggs or dairy makes it conside...

- Sun Jun 27, 2010 2:47 pm UTC
- Forum: Mathematics
- Topic: Hating on the statisticians
- Replies:
**72** - Views:
**9136**

### Re: Hating on the statisticians

edahl wrote:I might print this out and hang it on my wall.

I've already linked several of my philosopher friends to it, and I'm glad to see nash has sigged it. Now I can enjoy it all over the fora!