Question

nearest point and closed complement of a subspace in norm spaces

score 427 · Answer 1 · 2014-03-16 15:59:00

427

Views

nearest point and closed complement of a subspace in norm spaces

Published on 16 Mar 2014 - 15:59

score 1.2k · Answer 2 · 2014-03-17 21:49:35

1.2k

Views

Does sequential compactness imply countable compactness?

Published on 17 Mar 2014 - 21:49

score 212 · Answer 3 · 2014-03-18 16:05:23

212

Views

Heineken and Mohamed Groups

Published on 18 Mar 2014 - 16:05

score 833 · Answer 4 · 2014-03-18 16:57:52

833

Views

Counterexample to disprove that $P(A-B) = P(A) - P(B)$?

Published on 18 Mar 2014 - 16:57

score 108 · Answer 5 · 2026-03-28 08:49:28

108

Views

$\exists f:\mathbb{R}\rightarrow \mathbb{R},$ continuous, non-constant, with uncountably many extrema?

Published on 28 Mar 2026 - 8:49

score 110 · Answer 6 · 2026-03-26 04:53:10

110

Views

Find an example such that $\tau$ is a stopping time and $\mathcal{F}_\tau$ and $\mathcal{F}_\infty$ differ on $\{\tau = \infty\}$.

Published on 26 Mar 2026 - 4:53

score 1.6k · Answer 7 · 2014-03-19 02:20:30

1.6k

Views

Why doesn't the identity theorem for holomorphic functions work for real-differentiable functions?

Published on 19 Mar 2014 - 2:20

score 4k · Answer 8 · 2014-03-20 10:43:33

4k

Views

Are continuous functions monotonic for very small ranges?

Published on 20 Mar 2014 - 10:43

score 86 · Answer 9 · 2014-03-20 14:53:11

86

Views

If $\lim \limits_{x \to \infty}f(x) = L \neq 0$ must it be that $\lim_{x \to \infty} f(x) \sin x $ does not exist?

Published on 20 Mar 2014 - 14:53

score 776 · Answer 10 · 2014-03-20 16:12:15

776

Views

Does there exist a nowhere differentiable, everywhere continous, monotone somewhere function?

Published on 20 Mar 2014 - 16:12

score 392 · Answer 11 · 2014-03-20 19:42:06

392

Views

Is there a nonempty open bounded subset of plane whose boundary contains no 1 dimensional interval?

Published on 20 Mar 2014 - 19:42

score 527 · Answer 12 · 2014-03-21 08:06:04

527

Views

Can compact sets completey determine a topology?

Published on 21 Mar 2014 - 8:06

score 94 · Answer 13 · 2014-03-21 14:32:14

94

Views

A question on Fourier Transform

Published on 21 Mar 2014 - 14:32

score 189 · Answer 14 · 2014-03-23 03:08:05

189

Views

Hard to find counterexample for $\partial (\partial A) = \partial A$

Published on 23 Mar 2014 - 3:08

score 343 · Answer 15 · 2014-03-23 13:59:15

343

Views

Counterexample of separation theorem

Published on 23 Mar 2014 - 13:59

List Question

nearest point and closed complement of a subspace in norm spaces

Does sequential compactness imply countable compactness?

Heineken and Mohamed Groups

Counterexample to disprove that $P(A-B) = P(A) - P(B)$?

$\exists f:\mathbb{R}\rightarrow \mathbb{R},$ continuous, non-constant, with uncountably many extrema?

Find an example such that $\tau$ is a stopping time and $\mathcal{F}_\tau$ and $\mathcal{F}_\infty$ differ on $\{\tau = \infty\}$.

Why doesn't the identity theorem for holomorphic functions work for real-differentiable functions?

Are continuous functions monotonic for very small ranges?

If $\lim \limits_{x \to \infty}f(x) = L \neq 0$ must it be that $\lim_{x \to \infty} f(x) \sin x $ does not exist?

Does there exist a nowhere differentiable, everywhere continous, monotone somewhere function?

Is there a nonempty open bounded subset of plane whose boundary contains no 1 dimensional interval?

Can compact sets completey determine a topology?

A question on Fourier Transform

Hard to find counterexample for $\partial (\partial A) = \partial A$

Counterexample of separation theorem

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