Question

If $H$ is of finite index, Prove that, there is a subgroup $N$ of $H$ and of finite index in $G$ such that $aNa^{-1}= N$ for all $a$ in $G$

score 573 · Answer 1 · 2026-04-12 18:41:28

If $H$ is of finite index, Prove that, there is a subgroup $N$ of $H$ and of finite index in $G$ such that $aNa^{-1}= N$ for all $a$ in $G$

score 79 · Answer 2 · 2026-04-16 13:59:24

79

Views

Find a finite automaton such that the language accepted by it is the set of even numbers in binary notation

Published on 16 Apr 2026 - 13:59

score 119 · Answer 3 · 2026-04-13 00:05:30

119

Views

A corrispondence between maximal ideals

Published on 13 Apr 2026 - 0:05

score 444 · Answer 4 · 2026-04-14 03:55:47

444

Views

Is it trivial that the Levi-Civita connection can be pulled back to a isometric manifold?

Published on 14 Apr 2026 - 3:55

score 823 · Answer 5 · 2026-04-15 21:09:40

823

Views

Calculate $\lim_{x \to 0} \frac{\ln(1+2x)}{x^2}$ with the help of l'Hospital's and Bernoullie's rule.

Published on 15 Apr 2026 - 21:09

score 63 · Answer 6 · 2026-04-16 16:24:29

63

Views

Show: $\lim_{n\rightarrow \infty} \left|\int_{1}^{e}\left[\ln(x)\right]^n\:dx \right|= 0 $

Published on 16 Apr 2026 - 16:24

score 31 · Answer 7 · 2026-04-16 21:58:31

31

Views

Darboux sums elementary question - am I correct

Published on 16 Apr 2026 - 21:58

score 43 · Answer 8 · 2026-04-14 04:02:00

43

Views

Cardinality of cartesian products of a series of infinite sets

Published on 14 Apr 2026 - 4:02

score 88 · Answer 9 · 2026-04-11 07:17:51

88

Views

Proof Checking a "Logic Equation" Puzzle

Published on 11 Apr 2026 - 7:17

score 157 · Answer 10 · 2026-04-10 04:50:01

157

Views

Heine theorem without subsequences

Published on 10 Apr 2026 - 4:50

score 380 · Answer 11 · 2026-04-15 11:30:14

380

Views

Combinatorics Proof?

Published on 15 Apr 2026 - 11:30

score 174 · Answer 12 · 2026-04-16 20:17:12

174

Views

Help with the proof that a sequence is convergent iff it is bounded and has a single subsequential limit.

Published on 16 Apr 2026 - 20:17

score 1k · Answer 13 · 2026-04-09 12:19:25

1k

Views

Proof verification: Strong Law of Large Numbers Under Fourth Moment Control

Published on 09 Apr 2026 - 12:19

score 51 · Answer 14 · 2026-04-11 10:41:33

51

Views

Question on a proof of no existance of monochromatic triangle in any tricoloring of edges of $K_{16}$

Published on 11 Apr 2026 - 10:41

score 813 · Answer 15 · 2026-04-12 17:44:05

813

Views

Proof verification: Tightness of a family of random variables converging in distribution.

Published on 12 Apr 2026 - 17:44

List Question

If $H$ is of finite index, Prove that, there is a subgroup $N$ of $H$ and of finite index in $G$ such that $aNa^{-1}= N$ for all $a$ in $G$

Find a finite automaton such that the language accepted by it is the set of even numbers in binary notation

A corrispondence between maximal ideals

Is it trivial that the Levi-Civita connection can be pulled back to a isometric manifold?

Calculate $\lim_{x \to 0} \frac{\ln(1+2x)}{x^2}$ with the help of l'Hospital's and Bernoullie's rule.

Show: $\lim_{n\rightarrow \infty} \left|\int_{1}^{e}\left[\ln(x)\right]^n\:dx \right|= 0 $

Darboux sums elementary question - am I correct

Cardinality of cartesian products of a series of infinite sets

Proof Checking a "Logic Equation" Puzzle

Heine theorem without subsequences

Combinatorics Proof?

Help with the proof that a sequence is convergent iff it is bounded and has a single subsequential limit.

Proof verification: Strong Law of Large Numbers Under Fourth Moment Control

Question on a proof of no existance of monochromatic triangle in any tricoloring of edges of $K_{16}$

Proof verification: Tightness of a family of random variables converging in distribution.

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