Question

Sequence of expectation doesn't converge despite weak convergence

score 40 · Answer 1 · 2023-12-12 15:54:55

40

Views

Sequence of expectation doesn't converge despite weak convergence

Published on 12 Dec 2023 - 15:54

score 103 · Answer 2 · 2023-12-12 22:12:19

103

Views

Is there a metric space with cardinality $> |\mathbb{R}|$

Published on 12 Dec 2023 - 22:12

score 97 · Answer 3 · 2026-03-28 03:27:36

97

Views

Interesting contexts in which the first few cohomology groups ($H^1$ and $H^2$) show up?

Published on 28 Mar 2026 - 3:27

score 50 · Answer 4 · 2026-04-03 21:21:23

50

Views

Perron-Frobenius eigenvector with rational entries?

Published on 03 Apr 2026 - 21:21

score 40 · Answer 5 · 2023-12-15 21:12:06

40

Views

Counterexample for convergence of series of iterated $\ln$

Published on 15 Dec 2023 - 21:12

score 33 · Answer 6 · 2023-12-16 03:25:25

33

Views

Give an example of a non-commutative ring of order $4?$

Published on 16 Dec 2023 - 3:25

score 61 · Answer 7 · 2026-03-26 19:01:49

61

Views

For any $2-$d shape, can (at least) half its area be filled up with finitely many disjoint discs of the same size?

Published on 26 Mar 2026 - 19:01

score 56 · Answer 8 · 2023-12-19 19:45:32

56

Views

Invertible compostion of 3 functions

Published on 19 Dec 2023 - 19:45

score 78 · Answer 9 · 2023-12-19 20:13:21

78

Views

When do the composition factors need to be permuted in the Jordan-Hölder Theorem?

Published on 19 Dec 2023 - 20:13

score 60 · Answer 10 · 2023-12-20 06:32:08

60

Views

Let $x$ be a nilpotent element and $y$ be a unit in a commutative ring $R$. If the elements $x,y$ do not commute, then is, $x+y$ is a unit in $R?$

Published on 20 Dec 2023 - 6:32

score 120 · Answer 11 · 2026-03-26 04:34:59

120

Views

A beetle on each square of a $9 \times 9$ chessboard. Each beetle crawls one square diagonally, find minimal possible no. of free squares.

Published on 26 Mar 2026 - 4:34

score 137 · Answer 12 · 2023-12-21 12:38:45

137

Views

Convergence of sequence of points on non-intersecting balls in $\mathbb{R^k}$

Published on 21 Dec 2023 - 12:38

score 379 · Answer 13 · 2026-03-27 21:54:40

379

Views

Help proving that this metric space is not path connected

Published on 27 Mar 2026 - 21:54

score 52 · Answer 14 · 2023-12-25 00:43:53

52

Views

Counterexample for $H_1(H_2 \cap H_3) = H_1 H_2 \cap H_1 H_3$ where $H_i$ are subgroups of group $G$

Published on 25 Dec 2023 - 0:43

score 65 · Answer 15 · 2023-12-25 06:58:27

65

Views

Algebraically closed field s.t. $K\simeq L$, $K\subsetneq L$.

Published on 25 Dec 2023 - 6:58

List Question

Sequence of expectation doesn't converge despite weak convergence

Is there a metric space with cardinality $> |\mathbb{R}|$

Interesting contexts in which the first few cohomology groups ($H^1$ and $H^2$) show up?

Perron-Frobenius eigenvector with rational entries?

Counterexample for convergence of series of iterated $\ln$

Give an example of a non-commutative ring of order $4?$

For any $2-$d shape, can (at least) half its area be filled up with finitely many disjoint discs of the same size?

Invertible compostion of 3 functions

When do the composition factors need to be permuted in the Jordan-Hölder Theorem?

Let $x$ be a nilpotent element and $y$ be a unit in a commutative ring $R$. If the elements $x,y$ do not commute, then is, $x+y$ is a unit in $R?$

A beetle on each square of a $9 \times 9$ chessboard. Each beetle crawls one square diagonally, find minimal possible no. of free squares.

Convergence of sequence of points on non-intersecting balls in $\mathbb{R^k}$

Help proving that this metric space is not path connected

Counterexample for $H_1(H_2 \cap H_3) = H_1 H_2 \cap H_1 H_3$ where $H_i$ are subgroups of group $G$

Algebraically closed field s.t. $K\simeq L$, $K\subsetneq L$.

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