Question

Position of specific value

score 31 · Answer 1 · 2026-04-02 18:11:58

31

Views

Position of specific value

Published on 02 Apr 2026 - 18:11

score 120 · Answer 2 · 2022-05-13 17:23:33

120

Views

Why is this proof wrong? ( I proved the irrationality of $\pi$ using the most basic techniques so I suspect that it must have gone wrong somewhere)

Published on 13 May 2022 - 17:23

score 85 · Answer 3 · 2026-04-02 18:08:48

85

Views

Does a set of all decimal expansions of $\pi$ contains $\pi?$

Published on 02 Apr 2026 - 18:08

score 364 · Answer 4 · 2026-03-30 03:04:17

364

Views

Conjecture: $\frac1\pi=\sum_{n=0}^\infty\left((n+1)\frac{C_n^3}{2^{6n}}\sum_{k=0}^n(-1)^k{n\choose k}{\frac{(n-k)(k-1)}{(2k-1)(2k+1)}}\right)$

Published on 30 Mar 2026 - 3:04

score 182 · Answer 5 · 2022-07-01 14:10:30

182

Views

Is the last discovered digit of $\pi$ rounded or not?

Published on 01 Jul 2022 - 14:10

score 164 · Answer 6 · 2022-07-03 23:31:36

164

Views

Calculating Pi by subtracting squares from a circumsquare

Published on 03 Jul 2022 - 23:31

score 108 · Answer 7 · 2022-07-04 17:30:04

108

Views

Cartan's proof that there is a smallest positive zero of cosine function

Published on 04 Jul 2022 - 17:30

score 199 · Answer 8 · 2026-04-02 19:53:17

199

Views

Is there a formula that allows you calculate the n-th decimal digit of pi without calculating the previous digits?

Published on 02 Apr 2026 - 19:53

score 609 · Answer 9 · 2022-07-31 23:37:10

609

Views

Limit of $n^2$ and a recurrence relation with ceiling function

Published on 31 Jul 2022 - 23:37

score 579 · Answer 10 · 2026-03-28 03:00:30

579

Views

How do you apply the digit-extraction algorithm from Plouffe (2022)?

Published on 28 Mar 2026 - 3:00

score 171 · Answer 11 · 2026-03-29 22:36:27

171

Views

Show that: $e^{\pi}-\pi^{e} >\frac12$ without calculator

Published on 29 Mar 2026 - 22:36

score 1.7k · Answer 12 · 2026-02-23 22:46:07

1.7k

Views

Fractional approximation of $e$

Published on 23 Feb 2026 - 22:46

score 153 · Answer 13 · 2026-03-30 07:56:07

153

Views

How to prove $\lim\limits_{x \to \infty} \frac{\pi\sqrt{x}}{\sin{(\frac{\pi}{\sqrt{x}} })} - x = \frac{\pi^2}{6}$?

Published on 30 Mar 2026 - 7:56

score 127 · Answer 14 · 2022-08-26 07:30:39

127

Views

A square with the side length of pi.

Published on 26 Aug 2022 - 7:30

score 583 · Answer 15 · 2026-03-28 13:41:57

583

Views

Finding large palindromic primes in the decimal expansion of pi

Published on 28 Mar 2026 - 13:41

List Question

Position of specific value

Why is this proof wrong? ( I proved the irrationality of $\pi$ using the most basic techniques so I suspect that it must have gone wrong somewhere)

Does a set of all decimal expansions of $\pi$ contains $\pi?$

Conjecture: $\frac1\pi=\sum_{n=0}^\infty\left((n+1)\frac{C_n^3}{2^{6n}}\sum_{k=0}^n(-1)^k{n\choose k}{\frac{(n-k)(k-1)}{(2k-1)(2k+1)}}\right)$

Is the last discovered digit of $\pi$ rounded or not?

Calculating Pi by subtracting squares from a circumsquare

Cartan's proof that there is a smallest positive zero of cosine function

Is there a formula that allows you calculate the n-th decimal digit of pi without calculating the previous digits?

Limit of $n^2$ and a recurrence relation with ceiling function

How do you apply the digit-extraction algorithm from Plouffe (2022)?

Show that: $e^{\pi}-\pi^{e} >\frac12$ without calculator

Fractional approximation of $e$

How to prove $\lim\limits_{x \to \infty} \frac{\pi\sqrt{x}}{\sin{(\frac{\pi}{\sqrt{x}} })} - x = \frac{\pi^2}{6}$?

A square with the side length of pi.

Finding large palindromic primes in the decimal expansion of pi

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