Question

Prove: $x_n\to p \iff$ Eventually All The Elements Of The Sequence Are In A Neighborhood

score 24 · Answer 1 · 2026-04-01 03:09:58

24

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Prove: $x_n\to p \iff$ Eventually All The Elements Of The Sequence Are In A Neighborhood

Published on 01 Apr 2026 - 3:09

score 788 · Answer 2 · 2026-03-22 23:22:15

788

Views

Is my proof correct on how $k$ must be a power of $2$? Are there other proofs?

Published on 22 Mar 2026 - 23:22

score 30 · Answer 3 · 2018-05-24 16:24:59

30

Views

Proving lemmas during construction of non-measurable sets.

Published on 24 May 2018 - 16:24

score 309 · Answer 4 · 2026-03-25 01:23:43

309

Views

Is this a valid proof for a Mixed Nash Equilibria ( and also a Pure N.E)?

Published on 25 Mar 2026 - 1:23

score 306 · Answer 5 · 2026-03-25 19:06:53

306

Views

What is wrong with my proof of the injectivity of the matrix exponential in $\mathbb{R}$?

Published on 25 Mar 2026 - 19:06

score 689 · Answer 6 · 2026-03-25 17:20:51

689

Views

$f_n\to f$ weakly in $L^p\implies f\in L^p$

Published on 25 Mar 2026 - 17:20

score 154 · Answer 7 · 2018-05-25 09:32:03

154

Views

Fractional ideal which is not invertible

Published on 25 May 2018 - 9:32

score 86 · Answer 8 · 2026-03-25 10:25:18

86

Views

Is $\sum_{i=1}^{n-1}i^{n-1}\equiv -1\pmod {2n}\Leftrightarrow \text{$n$ is prime }\equiv 3\pmod 4$?

Published on 25 Mar 2026 - 10:25

score 126 · Answer 9 · 2026-03-30 12:21:17

126

Views

How to prove a transformation exists and is valid between two objects.

Published on 30 Mar 2026 - 12:21

score 417 · Answer 10 · 2026-03-26 06:08:12

417

Views

If $x_n \to 0$ and $\sigma : \mathbb{N} \to \mathbb{N}$ is a bijection, then show that $x_{\sigma (n)} \to 0$

Published on 26 Mar 2026 - 6:08

score 287 · Answer 11 · 2026-03-30 21:18:23

287

Views

Stalk of the direct image of a locally free sheaf

Published on 30 Mar 2026 - 21:18

score 914 · Answer 12 · 2026-03-25 16:02:12

914

Views

a proof of Hall's theorem (for bipirtite graph matching)

Published on 25 Mar 2026 - 16:02

score 4.2k · Answer 13 · 2026-03-25 03:07:03

4.2k

Views

Hall's theorem for bipartite graphs using König's theorem

Published on 25 Mar 2026 - 3:07

score 938 · Answer 14 · 2026-03-26 02:45:50

938

Views

How to show that any subgroup of a cyclic group must be cyclic

Published on 26 Mar 2026 - 2:45

score 82 · Answer 15 · 2026-03-30 08:37:31

82

Views

I do not understand what this question requires of me

Published on 30 Mar 2026 - 8:37

List Question

Prove: $x_n\to p \iff$ Eventually All The Elements Of The Sequence Are In A Neighborhood

Is my proof correct on how $k$ must be a power of $2$? Are there other proofs?

Proving lemmas during construction of non-measurable sets.

Is this a valid proof for a Mixed Nash Equilibria ( and also a Pure N.E)?

What is wrong with my proof of the injectivity of the matrix exponential in $\mathbb{R}$?

$f_n\to f$ weakly in $L^p\implies f\in L^p$

Fractional ideal which is not invertible

Is $\sum_{i=1}^{n-1}i^{n-1}\equiv -1\pmod {2n}\Leftrightarrow \text{$n$ is prime }\equiv 3\pmod 4$?

How to prove a transformation exists and is valid between two objects.

If $x_n \to 0$ and $\sigma : \mathbb{N} \to \mathbb{N}$ is a bijection, then show that $x_{\sigma (n)} \to 0$

Stalk of the direct image of a locally free sheaf

a proof of Hall's theorem (for bipirtite graph matching)

Hall's theorem for bipartite graphs using König's theorem

How to show that any subgroup of a cyclic group must be cyclic

I do not understand what this question requires of me

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