Question

Image (column space) and kernel (null space) of a composition of linear transformations

score 435 · Answer 1 · 2026-04-12 08:35:35

435

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Image (column space) and kernel (null space) of a composition of linear transformations

Published on 12 Apr 2026 - 8:35

score 29 · Answer 2 · 2026-04-15 19:05:46

29

Views

Prove $w \in \mathbb{z} : k \mod 2 \neq 0 \rightarrow k \in \mathbb{z} : k^3 \mod 2 \neq 0$ directly

Published on 15 Apr 2026 - 19:05

score 324 · Answer 3 · 2026-04-15 20:19:33

324

Views

Prove that $\bigcup_{n=1}^\infty[1, 1+1/n] = [1, 2]$.

Published on 15 Apr 2026 - 20:19

score 179 · Answer 4 · 2026-04-12 13:37:29

179

Views

Cauchy Sequence Proof using Power series

Published on 12 Apr 2026 - 13:37

score 26 · Answer 5 · 2026-04-09 14:24:52

26

Views

Proof verification: proof with restricted function

Published on 09 Apr 2026 - 14:24

score 44 · Answer 6 · 2026-04-09 15:25:51

44

Views

Finding general formula for sequence and prooving

Published on 09 Apr 2026 - 15:25

score 102 · Answer 7 · 2026-04-17 13:04:45

102

Views

$M, N, P$ smooth manifolds and $F: M \to N$, $G: N \to P$ smooth maps. Show $d(G\circ F)_p=dG_{F(p)} \circ dF_p: T_p M \to T_{G \circ F(p)}P$.

Published on 17 Apr 2026 - 13:04

score 64 · Answer 8 · 2026-04-16 20:36:48

64

Views

Analysis proof writing direction, tips or pointer (sup(A union B) smaller or equal min(supA, sup B)

Published on 16 Apr 2026 - 20:36

score 338 · Answer 9 · 2026-04-12 02:26:28

338

Views

The integral equation equivalent to the initial value problem

Published on 12 Apr 2026 - 2:26

score 1k · Answer 10 · 2026-04-15 15:57:59

1k

Views

Proof of $lg(lg(n)) = lgn - 1$

Published on 15 Apr 2026 - 15:57

score 55 · Answer 11 · 2026-04-13 07:49:39

55

Views

Open sets and open balls in a metric space

Published on 13 Apr 2026 - 7:49

score 207 · Answer 12 · 2026-04-16 07:44:27

207

Views

Proving $\bigcup_{n=1}^{\infty}[3 - \frac{1}{n}, 6] = [2, 6]$, have I done it correctly?

Published on 16 Apr 2026 - 7:44

score 74 · Answer 13 · 2026-04-09 17:31:49

74

Views

Proof that if $R_{1};R_{2}=R_{2};R_{1}$ is a relation on a set $S$, then $R_{1}$ and $R_{2}$ are bijective maps

Published on 09 Apr 2026 - 17:31

score 76 · Answer 14 · 2026-04-12 23:27:12

76

Views

Algebra behind equidistant subdivision of unit simplices

Published on 12 Apr 2026 - 23:27

score 135 · Answer 15 · 2026-04-10 22:43:17

135

Views

If $R_{1}$ and $R_{2}$ are relations on a set S with $R_{1};R_{2}=R_{2};R_{1}$. Then $R_{1}$ and $R_{2}$ are bijective maps

Published on 10 Apr 2026 - 22:43

List Question

Image (column space) and kernel (null space) of a composition of linear transformations

Prove $w \in \mathbb{z} : k \mod 2 \neq 0 \rightarrow k \in \mathbb{z} : k^3 \mod 2 \neq 0$ directly

Prove that $\bigcup_{n=1}^\infty[1, 1+1/n] = [1, 2]$.

Cauchy Sequence Proof using Power series

Proof verification: proof with restricted function

Finding general formula for sequence and prooving

$M, N, P$ smooth manifolds and $F: M \to N$, $G: N \to P$ smooth maps. Show $d(G\circ F)_p=dG_{F(p)} \circ dF_p: T_p M \to T_{G \circ F(p)}P$.

Analysis proof writing direction, tips or pointer (sup(A union B) smaller or equal min(supA, sup B)

The integral equation equivalent to the initial value problem

Proof of $lg(lg(n)) = lgn - 1$

Open sets and open balls in a metric space

Proving $\bigcup_{n=1}^{\infty}[3 - \frac{1}{n}, 6] = [2, 6]$, have I done it correctly?

Proof that if $R_{1};R_{2}=R_{2};R_{1}$ is a relation on a set $S$, then $R_{1}$ and $R_{2}$ are bijective maps

Algebra behind equidistant subdivision of unit simplices

If $R_{1}$ and $R_{2}$ are relations on a set S with $R_{1};R_{2}=R_{2};R_{1}$. Then $R_{1}$ and $R_{2}$ are bijective maps

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