Question

Weak* sequentiality

score 124 · Answer 1 · 2026-04-11 13:55:39

124

Views

Weak* sequentiality

Published on 11 Apr 2026 - 13:55

score 434 · Answer 2 · 2026-03-26 12:36:29

434

Views

Let $\mu$ be the measure constructed in the Riesz representation theorem. Is $\mu(\partial A)=0$?

Published on 26 Mar 2026 - 12:36

score 1.6k · Answer 3 · 2026-04-17 12:29:22

1.6k

Views

Showing infinite direct sum of Banach spaces with a certain norm is a Banach space

Published on 17 Apr 2026 - 12:29

score 418 · Answer 4 · 2026-04-16 09:16:50

418

Views

Continuous mapping on unit ball such that $T(\Bbb x_0)=0$

Published on 16 Apr 2026 - 9:16

score 177 · Answer 5 · 2026-04-11 09:36:03

177

Views

Banach spaces over complete fields with their own absolute value

Published on 11 Apr 2026 - 9:36

score 164 · Answer 6 · 2026-04-12 06:31:11

164

Views

Open maping theorem. Completeness assumption are important

Published on 12 Apr 2026 - 6:31

score 453 · Answer 7 · 2026-04-17 02:16:57

453

Views

If $a$ and $b$ commute in a $C^*$-algebra and $a$ is normal, then $f(a)$ and $b$ commute for any continuous $f$

Published on 17 Apr 2026 - 2:16

score 436 · Answer 8 · 2026-04-12 09:56:26

436

Views

Properties of the duals of $\ell^1$ and $\ell^{\infty}$

Published on 12 Apr 2026 - 9:56

score 580 · Answer 9 · 2026-04-16 09:39:02

580

Views

Norms that $C([0,1])$ to be an incomplete normed space.

Published on 16 Apr 2026 - 9:39

score 467 · Answer 10 · 2026-04-16 04:29:03

467

Views

projection from the set of convergent sequences to convergent to zero sequences.

Published on 16 Apr 2026 - 4:29

score 983 · Answer 11 · 2026-04-13 03:24:40

983

Views

characterization of weakly convergent to zero sequences on $l^p$ for $1\le p < \infty$

Published on 13 Apr 2026 - 3:24

score 390 · Answer 12 · 2026-04-21 12:16:34

390

Views

Do monotone operators have positive Frechet derivatives?

Published on 21 Apr 2026 - 12:16

score 557 · Answer 13 · 2026-04-13 04:51:04

557

Views

on the no existence of a continuous extension of the identity function on $c_0$ to $l^{\infty}$ not equal to $I$

Published on 13 Apr 2026 - 4:51

score 1.9k · Answer 14 · 2026-04-14 12:00:53

1.9k

Views

bilinear form defined on $ X \times Y \to Z$ where $X$ is banach using uniform boundedness principl

Published on 14 Apr 2026 - 12:00

score 153 · Answer 15 · 2026-04-16 13:38:06

153

Views

sequences and hyperplanes

Published on 16 Apr 2026 - 13:38

List Question

Weak* sequentiality

Let $\mu$ be the measure constructed in the Riesz representation theorem. Is $\mu(\partial A)=0$?

Showing infinite direct sum of Banach spaces with a certain norm is a Banach space

Continuous mapping on unit ball such that $T(\Bbb x_0)=0$

Banach spaces over complete fields with their own absolute value

Open maping theorem. Completeness assumption are important

If $a$ and $b$ commute in a $C^*$-algebra and $a$ is normal, then $f(a)$ and $b$ commute for any continuous $f$

Properties of the duals of $\ell^1$ and $\ell^{\infty}$

Norms that $C([0,1])$ to be an incomplete normed space.

projection from the set of convergent sequences to convergent to zero sequences.

characterization of weakly convergent to zero sequences on $l^p$ for $1\le p < \infty$

Do monotone operators have positive Frechet derivatives?

on the no existence of a continuous extension of the identity function on $c_0$ to $l^{\infty}$ not equal to $I$

bilinear form defined on $ X \times Y \to Z$ where $X$ is banach using uniform boundedness principl

sequences and hyperplanes

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