Question

Length of a Linearly Independent List $\le$ Length of a Space-Spanning List

score 564 · Answer 1 · 2026-04-16 21:46:03

564

Views

Length of a Linearly Independent List $\le$ Length of a Space-Spanning List

Published on 16 Apr 2026 - 21:46

score 128 · Answer 2 · 2026-04-12 13:26:02

128

Views

Is my proof that $ B- \bigcup_{i=i}A_i \subseteq \bigcap_{i=I}(B - A_i)$ correct?

Published on 12 Apr 2026 - 13:26

score 59 · Answer 3 · 2026-04-15 23:42:49

59

Views

Proving the conditions when my structured matrix fails to be invertible

Published on 15 Apr 2026 - 23:42

score 1.4k · Answer 4 · 2026-04-11 06:35:15

1.4k

Views

Beginner PROOF question involving perfect squares.

Published on 11 Apr 2026 - 6:35

score 150 · Answer 5 · 2026-04-07 16:31:46

150

Views

Can someone explain why amoebas are closed?

Published on 07 Apr 2026 - 16:31

score 463 · Answer 6 · 2026-04-08 20:53:04

463

Views

Cox proof of product rule - step explanation

Published on 08 Apr 2026 - 20:53

score 5.2k · Answer 7 · 2026-04-16 00:55:41

5.2k

Views

Definite Integral: Proving $\int_{0}^{2\pi}\frac{x \cos(x)}{1+\cos(x)}dx = 2\pi^{2}$

Published on 16 Apr 2026 - 0:55

score 171 · Answer 8 · 2026-03-26 17:52:49

171

Views

Understanding the contradiction in Lindemann-Weierstrass Theorem

Published on 26 Mar 2026 - 17:52

score 186 · Answer 9 · 2026-04-09 10:55:21

186

Views

Revisit the problem " Image of open set through linear map "

Published on 09 Apr 2026 - 10:55

score 248 · Answer 10 · 2026-04-11 12:21:17

248

Views

Using change of function and limit approximation method to solve differential equation

Published on 11 Apr 2026 - 12:21

score 336 · Answer 11 · 2026-04-15 12:48:12

336

Views

Does proof by contrapositive take into account that P might be false regardless of whether we have Q or not Q?

Published on 15 Apr 2026 - 12:48

score 366 · Answer 12 · 2026-04-14 18:04:39

366

Views

Why in discrete space, $\{x\}$ is open $\Rightarrow$ $\{x\}$ is closed, but in $T_1$ space, $\{x\}$ is closed $\not\Rightarrow$ $\{x\}$ is open?

Published on 14 Apr 2026 - 18:04

score 268 · Answer 13 · 2026-04-17 09:47:52

Prove that$ A \subseteq B$ where $A = \{ x \in Z \vert \ x\equiv 4\pmod 9 \}\ $ and $\ B = \{ x \in Z \vert \ x\equiv 1\pmod 3 \}$

score 47 · Answer 14 · 2026-04-13 00:41:24

47

Views

Question on the inequality

Published on 13 Apr 2026 - 0:41

score 103 · Answer 15 · 2026-04-16 00:38:09

103

Views

Prove that if f is diff. on $(-\infty,\infty)$ such that $f(0)=0$ and $f(1)=1$,then there is a $c\in(0,1)$ such that $f'(c)=2c$

Published on 16 Apr 2026 - 0:38

List Question

Length of a Linearly Independent List $\le$ Length of a Space-Spanning List

Is my proof that $ B- \bigcup_{i=i}A_i \subseteq \bigcap_{i=I}(B - A_i)$ correct?

Proving the conditions when my structured matrix fails to be invertible

Beginner PROOF question involving perfect squares.

Can someone explain why amoebas are closed?

Cox proof of product rule - step explanation

Definite Integral: Proving $\int_{0}^{2\pi}\frac{x \cos(x)}{1+\cos(x)}dx = 2\pi^{2}$

Understanding the contradiction in Lindemann-Weierstrass Theorem

Revisit the problem " Image of open set through linear map "

Using change of function and limit approximation method to solve differential equation

Does proof by contrapositive take into account that P might be false regardless of whether we have Q or not Q?

Why in discrete space, $\{x\}$ is open $\Rightarrow$ $\{x\}$ is closed, but in $T_1$ space, $\{x\}$ is closed $\not\Rightarrow$ $\{x\}$ is open?

Prove that$ A \subseteq B$ where $A = \{ x \in Z \vert \ x\equiv 4\pmod 9 \}\ $ and $\ B = \{ x \in Z \vert \ x\equiv 1\pmod 3 \}$

Question on the inequality

Prove that if f is diff. on $(-\infty,\infty)$ such that $f(0)=0$ and $f(1)=1$,then there is a $c\in(0,1)$ such that $f'(c)=2c$

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