C.S.'s user avatar
C.S.'s user avatar
C.S.'s user avatar
C.S.
  • Member for 14 years, 4 months
  • Last seen more than a month ago
235 votes
10 answers
41k views

If $f$ is infinitely differentiable then $f$ coincides with a polynomial

51 votes
4 answers
17k views

Function satisfying $f^{-1} =f'$

20 votes
1 answer
2k views

On a Conjecture of Schinzel and Sierpinski

19 votes
4 answers
4k views

Ramanujan's eccentric Integral formula

15 votes
2 answers
1k views

Example of a group which has $\text{SL}_{n}(\mathbb{Z})$ as the automorphism group

14 votes
1 answer
3k views

Ramanujan's Incorrect formula

7 votes
3 answers
4k views

Transcendence of PI

7 votes
4 answers
4k views

Injective maps $\mathbb{R}^{n} \to \mathbb{R}^{m}$

6 votes
2 answers
4k views

Example of an infinite abelian but non-cyclic group whose automorphism group is cyclic

6 votes
5 answers
3k views

Group cannot be the union of conjugates

5 votes
1 answer
2k views

Why is this theorem attributed to J.-P. Serre?

5 votes
1 answer
1k views

Request for the proof of a result from Ramanujan's letter to Hardy.

5 votes
2 answers
2k views

Sylow's theorem 3rd Proof Page 96 I.N.Herstein

5 votes
1 answer
2k views

Continuous functions remaining constant

2 votes
0 answers
223 views

Idea behind choosing $\small f(x)$ as $c^{s}x^{p-1} \frac{[\theta(x)]^{p}}{(p-1)!}$ in the proof that $\pi$ is transcendental [closed]

1 vote
2 answers
752 views

Doubt in the proof of $\lim_{s \to 1^{+}} L(s,\chi) = L(1,\chi)$

1 vote
2 answers
13k views

Fatou's Lemma and the bounded convergence theorem. [closed]

1 vote
2 answers
540 views

Weierstrass Theorem [closed]

-3 votes
2 answers
1k views

Dirichlet's Divisor Function