Question

Let $A_1 \cap A_2 \cap \dots \cap A_n \neq \varnothing $. Then $A_1 \cup A_2 \cup \dots \cup A_n \neq \varnothing$.

score 189 · Answer 1 · 2026-04-16 13:29:10

189

Views

Let $A_1 \cap A_2 \cap \dots \cap A_n \neq \varnothing $. Then $A_1 \cup A_2 \cup \dots \cup A_n \neq \varnothing$.

Published on 16 Apr 2026 - 13:29

score 73 · Answer 2 · 2026-04-16 16:03:27

73

Views

Prove that $f \circ g$ is injective if $f$ and $g$ are injective.

Published on 16 Apr 2026 - 16:03

score 66 · Answer 3 · 2026-04-12 21:47:59

66

Views

Need to verify my disprove about a statement about big O

Published on 12 Apr 2026 - 21:47

score 37 · Answer 4 · 2026-04-13 22:17:34

37

Views

Proof Verification: $f(\Lambda_n(x))$ is pointwise bounded for all $x$, and all $f \in X^* $then $\Lambda_n$ is uniformly bounded

Published on 13 Apr 2026 - 22:17

score 114 · Answer 5 · 2026-04-13 19:23:42

114

Views

Question about whether function is odd or even

Published on 13 Apr 2026 - 19:23

score 79 · Answer 6 · 2026-04-13 02:48:32

79

Views

Show that $I-K$ has a closed range when $K$ is compact on a Hilbert space.

Published on 13 Apr 2026 - 2:48

score 340 · Answer 7 · 2026-04-09 17:30:33

340

Views

Proof of continuity from above in measure theory

Published on 09 Apr 2026 - 17:30

score 147 · Answer 8 · 2026-03-25 11:20:17

147

Views

Find $\nabla_x\left\langle L,Z-\begin{bmatrix}Tu&x\\ x^H&t\end{bmatrix}\right\rangle+p/2\left\|Z-\begin{bmatrix}Tu&x\\ x^H&t\end{bmatrix}\right\|^2$

Published on 25 Mar 2026 - 11:20

score 154 · Answer 9 · 2026-04-16 08:48:54

154

Views

Full rank real matrix and the rank of its associated complex matrix

Published on 16 Apr 2026 - 8:48

score 742 · Answer 10 · 2026-04-17 00:16:12

742

Views

A step in the proof of Fubini theorem (Theorem 2.36, Folland)

Published on 17 Apr 2026 - 0:16

score 54 · Answer 11 · 2026-04-13 19:02:17

54

Views

A question regarding matrices and minimal polynomials.

Published on 13 Apr 2026 - 19:02

score 73 · Answer 12 · 2026-04-15 07:36:45

73

Views

Solution to a problem regarding Characteristic and Minimal polynomials.

Published on 15 Apr 2026 - 7:36

score 61 · Answer 13 · 2026-04-12 21:02:13

61

Views

Property of polynomial in $L[x]$ where $L|_k$ is an algebraic extension.

Published on 12 Apr 2026 - 21:02

score 49 · Answer 14 · 2026-04-16 09:58:42

49

Views

$b^* a^* ab \leq \Vert a\Vert^2 b^* b$ in a $C^*$-algebra.

Published on 16 Apr 2026 - 9:58

score 184 · Answer 15 · 2026-04-11 17:13:40

184

Views

$N\subseteq G_x$ then is $N$ in the kernel of the group action

Published on 11 Apr 2026 - 17:13

List Question

Let $A_1 \cap A_2 \cap \dots \cap A_n \neq \varnothing $. Then $A_1 \cup A_2 \cup \dots \cup A_n \neq \varnothing$.

Prove that $f \circ g$ is injective if $f$ and $g$ are injective.

Need to verify my disprove about a statement about big O

Proof Verification: $f(\Lambda_n(x))$ is pointwise bounded for all $x$, and all $f \in X^* $then $\Lambda_n$ is uniformly bounded

Question about whether function is odd or even

Show that $I-K$ has a closed range when $K$ is compact on a Hilbert space.

Proof of continuity from above in measure theory

Find $\nabla_x\left\langle L,Z-\begin{bmatrix}Tu&x\\ x^H&t\end{bmatrix}\right\rangle+p/2\left\|Z-\begin{bmatrix}Tu&x\\ x^H&t\end{bmatrix}\right\|^2$

Full rank real matrix and the rank of its associated complex matrix

A step in the proof of Fubini theorem (Theorem 2.36, Folland)

A question regarding matrices and minimal polynomials.

Solution to a problem regarding Characteristic and Minimal polynomials.

Property of polynomial in $L[x]$ where $L|_k$ is an algebraic extension.

$b^* a^* ab \leq \Vert a\Vert^2 b^* b$ in a $C^*$-algebra.

$N\subseteq G_x$ then is $N$ in the kernel of the group action

Trending Questions

Popular # Hahtags

Popular Questions