Question

Does the matrix exponential $\|\mathrm{e}^{(D-\kappa I)\tau}\|_{l^\infty}$ equal $\mathrm{e}^{-\kappa \tau}$?

score 146 · Answer 1 · 2026-03-27 21:15:56

146

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Does the matrix exponential $\|\mathrm{e}^{(D-\kappa I)\tau}\|_{l^\infty}$ equal $\mathrm{e}^{-\kappa \tau}$?

Published on 27 Mar 2026 - 21:15

score 103 · Answer 2 · 2020-10-07 22:26:54

103

Views

Logical derivation about Hilberts Hotel, if Hilberts Hotel is true. Logical fallacies or true statements?

Published on 07 Oct 2020 - 22:26

score 51 · Answer 3 · 2020-10-08 21:49:19

51

Views

A basic tour on infinite dimensional manifolds

Published on 08 Oct 2020 - 21:49

score 886 · Answer 4 · 2020-10-09 17:49:39

886

Views

What is ∞ -(∞-1)?

Published on 09 Oct 2020 - 17:49

score 148 · Answer 5 · 2020-10-10 11:01:09

148

Views

Construction of a poset from infnitely many finite antichains

Published on 10 Oct 2020 - 11:01

score 51 · Answer 6 · 2020-10-10 15:31:28

51

Views

Tell me hint, $\sum ^{\infty }_{n=1}\dfrac{i}{\left( n+1\right) \left( n+2\right) }$

Published on 10 Oct 2020 - 15:31

score 129 · Answer 7 · 2020-10-11 17:09:32

129

Views

Why is the limit $\lim_{x\to-\infty} \frac{2x}{\sqrt{1+x^2}}-\arctan x=\pi/2-2$ and not $\pi/2 + 2$?

Published on 11 Oct 2020 - 17:09

score 322 · Answer 8 · 2020-10-12 04:04:46

322

Views

$\cdots 2222222222222222222222.0 \div \cdots 1111111111111111111111.0$

Published on 12 Oct 2020 - 4:04

score 70 · Answer 9 · 2020-10-12 16:56:51

70

Views

Prove that $n+10\cos n$ diverges to infinity

Published on 12 Oct 2020 - 16:56

score 77 · Answer 10 · 2026-04-06 19:36:53

77

Views

Show that the $\lim_{n\to \infty} \frac n{n+1} = 1$

Published on 06 Apr 2026 - 19:36

score 67 · Answer 11 · 2020-10-14 16:16:12

67

Views

Arithmetic on $ \aleph_0 $ such as $ \aleph_0 + 1 $ and $ \aleph_0 - 1 $

Published on 14 Oct 2020 - 16:16

score 40 · Answer 12 · 2020-10-15 06:22:49

40

Views

Does the use of infinity imply or is shorthand for a limit to infinity

Published on 15 Oct 2020 - 6:22

score 64 · Answer 13 · 2020-10-15 14:52:22

64

Views

Seemingly contradictory results show $f(n) = n e^{\frac{-\pi n}{2} i }$ is divergent

Published on 15 Oct 2020 - 14:52

score 478 · Answer 14 · 2020-10-16 20:25:41

478

Views

What is the cardinality of the set of all infinite words formed using a finite alphabet of length > 1?

Published on 16 Oct 2020 - 20:25

score 334 · Answer 15 · 2026-04-02 04:35:29

334

Views

why does ...999 apparently equal -1? is this notation valid?

Published on 02 Apr 2026 - 4:35

List Question

Does the matrix exponential $\|\mathrm{e}^{(D-\kappa I)\tau}\|_{l^\infty}$ equal $\mathrm{e}^{-\kappa \tau}$?

Logical derivation about Hilberts Hotel, if Hilberts Hotel is true. Logical fallacies or true statements?

A basic tour on infinite dimensional manifolds

What is ∞ -(∞-1)?

Construction of a poset from infnitely many finite antichains

Tell me hint, $\sum ^{\infty }_{n=1}\dfrac{i}{\left( n+1\right) \left( n+2\right) }$

Why is the limit $\lim_{x\to-\infty} \frac{2x}{\sqrt{1+x^2}}-\arctan x=\pi/2-2$ and not $\pi/2 + 2$?

$\cdots 2222222222222222222222.0 \div \cdots 1111111111111111111111.0$

Prove that $n+10\cos n$ diverges to infinity

Show that the $\lim_{n\to \infty} \frac n{n+1} = 1$

Arithmetic on $ \aleph_0 $ such as $ \aleph_0 + 1 $ and $ \aleph_0 - 1 $

Does the use of infinity imply or is shorthand for a limit to infinity

Seemingly contradictory results show $f(n) = n e^{\frac{-\pi n}{2} i }$ is divergent

What is the cardinality of the set of all infinite words formed using a finite alphabet of length > 1?

why does ...999 apparently equal -1? is this notation valid?

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