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Josh Chen
  • Member for 11 years, 6 months
  • Last seen this week
921 votes
29 answers
95k views

Can I use my powers for good? [closed]

  • 1,302
740 votes
12 answers
209k views

Does $\pi$ contain all possible number combinations?

  • 7,401
680 votes
25 answers
70k views

Splitting a sandwich and not feeling deceived

  • 15.6k
616 votes
8 answers
43k views

Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?

  • 5,720
612 votes
6 answers
83k views

Why can you turn clothing right-side-out?

  • 6,123
578 votes
21 answers
90k views

Mathematical difference between white and black notes in a piano

  • 5,667
539 votes
0 answers
19k views

Does there exist a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?

  • 69.4k
510 votes
10 answers
260k views

Integral $\int_{-1}^1\frac1x\sqrt{\frac{1+x}{1-x}}\ln\left(\frac{2\,x^2+2\,x+1}{2\,x^2-2\,x+1}\right) \mathrm dx$

502 votes
7 answers
21k views

"The Egg:" Bizarre behavior of the roots of a family of polynomials.

  • 26.1k
490 votes
10 answers
64k views

Best Sets of Lecture Notes and Articles

466 votes
10 answers
508k views

Is this Batman equation for real? [closed]

  • 5,501
430 votes
14 answers
356k views

Fourier transform for dummies

395 votes
1 answer
16k views

The Ring Game on $K[x,y,z]$

  • 58.6k
372 votes
33 answers
115k views

If $AB = I$ then $BA = I$

  • 5,787
369 votes
71 answers
79k views

'Obvious' theorems that are actually false

  • 11.1k
321 votes
31 answers
34k views

Nice examples of groups which are not obviously groups

285 votes
14 answers
12k views

Help with a prime number spiral which turns 90 degrees at each prime

  • 4,643
281 votes
63 answers
24k views

Funny identities [closed]

277 votes
4 answers
34k views

The Mathematics of Tetris

270 votes
13 answers
40k views

Given an infinite number of monkeys and an infinite amount of time, would one of them write Hamlet?

  • 1,289
253 votes
15 answers
139k views

"Which answer in this list is the correct answer to this question?"

250 votes
6 answers
25k views

In (relatively) simple words: What is an inverse limit?

  • 373k
248 votes
9 answers
83k views

What is the importance of the Collatz conjecture?

  • 17.4k
235 votes
36 answers
30k views

What are some counter-intuitive results in mathematics that involve only finite objects?

  • 3,626
212 votes
10 answers
70k views

Teaching myself differential topology and differential geometry

189 votes
9 answers
15k views

"Advice to young mathematicians"

  • 7,716
183 votes
14 answers
12k views

How do you revise material that you already half-know, without getting bored and demotivated?

  • 65.4k
168 votes
6 answers
27k views

Induction on Real Numbers

  • 1,783
166 votes
8 answers
49k views

Is there a quick proof as to why the vector space of $\mathbb{R}$ over $\mathbb{Q}$ is infinite-dimensional?

164 votes
41 answers
16k views

Is there any integral for the Golden Ratio?

  • 24.1k
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