Question

prove the sequence $x_{k+1}=\frac {1} {2} \left (x_k+ \frac {2} {x_k} \right)$ doesn't converge

score 88 · Answer 1 · 2026-04-17 11:58:46

88

Views

prove the sequence $x_{k+1}=\frac {1} {2} \left (x_k+ \frac {2} {x_k} \right)$ doesn't converge

Published on 17 Apr 2026 - 11:58

score 400 · Answer 2 · 2026-04-12 10:58:27

400

Views

Showing the closure of a compact subset need not be compact

Published on 12 Apr 2026 - 10:58

score 43 · Answer 3 · 2026-04-12 00:53:59

43

Views

Real Numbers Proof

Published on 12 Apr 2026 - 0:53

score 168 · Answer 4 · 2026-04-15 02:55:34

168

Views

Proving the negation of a conditional using proof by contradiction

Published on 15 Apr 2026 - 2:55

score 171 · Answer 5 · 2026-04-15 00:24:20

171

Views

Application of Unique Factorisation Theorem in Proof

Published on 15 Apr 2026 - 0:24

score 305 · Answer 6 · 2026-04-15 03:53:08

305

Views

An integer with cubic root that is not constructible

Published on 15 Apr 2026 - 3:53

score 71 · Answer 7 · 2026-04-15 12:40:47

71

Views

Proving an algebraic binomial identity related to Bertrand's ballot theorem

Published on 15 Apr 2026 - 12:40

score 24 · Answer 8 · 2026-04-14 23:19:56

24

Views

Proof that F'(z)=$\frac{∂F}{∂x}$=$\frac{1}{i}\frac{∂F}{∂y}$

Published on 14 Apr 2026 - 23:19

score 167 · Answer 9 · 2026-04-11 10:52:29

167

Views

Is the proof correct and rigorous enough? B. Demidovich, Problems in Mathematical Analysis, §1, ex. 10

Published on 11 Apr 2026 - 10:52

score 58 · Answer 10 · 2026-04-10 21:08:51

58

Views

How do I prove that the group $H$ is abelian in this question?

Published on 10 Apr 2026 - 21:08

score 172 · Answer 11 · 2026-04-17 14:36:33

172

Views

Prove that for all trees G = (V, Ε) and all vertices $c\in V$, if υ has at least two neighbours, then ν is a cut vertex of G using induction.

Published on 17 Apr 2026 - 14:36

score 383 · Answer 12 · 2026-04-14 04:18:55

383

Views

On the locally Euclidean topological spaces of dimension n

Published on 14 Apr 2026 - 4:18

score 79 · Answer 13 · 2026-04-16 23:00:45

79

Views

Generalization and Proof of Littlewood's Conjecture

Published on 16 Apr 2026 - 23:00

score 52 · Answer 14 · 2026-04-09 07:27:49

52

Views

Understanding logical implication and alternate proofs

Published on 09 Apr 2026 - 7:27

score 264 · Answer 15 · 2026-04-11 19:17:56

264

Views

Proving Trigonometric “Definitions”

Published on 11 Apr 2026 - 19:17

List Question

prove the sequence $x_{k+1}=\frac {1} {2} \left (x_k+ \frac {2} {x_k} \right)$ doesn't converge

Showing the closure of a compact subset need not be compact

Real Numbers Proof

Proving the negation of a conditional using proof by contradiction

Application of Unique Factorisation Theorem in Proof

An integer with cubic root that is not constructible

Proving an algebraic binomial identity related to Bertrand's ballot theorem

Proof that F'(z)=$\frac{∂F}{∂x}$=$\frac{1}{i}\frac{∂F}{∂y}$

Is the proof correct and rigorous enough? B. Demidovich, Problems in Mathematical Analysis, §1, ex. 10

How do I prove that the group $H$ is abelian in this question?

Prove that for all trees G = (V, Ε) and all vertices $c\in V$, if υ has at least two neighbours, then ν is a cut vertex of G using induction.

On the locally Euclidean topological spaces of dimension n

Generalization and Proof of Littlewood's Conjecture

Understanding logical implication and alternate proofs

Proving Trigonometric “Definitions”

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