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Mathematics
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Joako's user avatar
Joako
  • Member for 3 years, 3 months
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About

Electrical engineer and broke entrepreneur now working as an electrician. This is an affordable distraction to satiate my love for science and learning new things.

PS: I am not native in English (and I still struggle with it - apollogies in advance).

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View all questions and answers
23
Are these equations "properly" defined differential equations? (finite duration solutions to diff. eqs.)
May 17, 2022
12
Closed-form solutions to $x''+\frac{k}{m}\ x+\mu\ g\ \text{sgn}(x')=0$
Feb 7, 2023
10
Formula for bump function
yesterday
10
Is the following piecewise-defined function smooth $\in C^\infty(\mathbb{R})$?
Jul 4, 2023
7
Solving $x''+x+\text{sgn}(x')\sqrt{|x'|} = 0\ $ Does it have closed form solutions? Does it stop moving? Could it stop at a different place than zero?
May 2, 2023
7
Particularly nice bump function
Jul 31, 2023
7
Why do we say that the inner product "captures" the notion of "angle"?
Jan 28, 2023
6
Plotting tight bounds for simple Wiener Brownian motion - problems with classic definitions (Law of iterated logarithm)
Sep 27, 2021
6
Issues with the Fourier Transform of $f(t)=(1-t^2)^4$ on $[-1,\,1]$, should be analytical but looks like having a singularity with noise-like rippling
May 6, 2022
6
Does Lipschitz-kind "non-scalar ODEs" and PDEs could stand having finite-duration solutions?
Apr 21, 2022
Top Meta posts
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27
It is possible to add a banner indicating there is currently a moderation strike?
5
Are there any symbol to make a "half-space" in MathJax? half the size of $\text{\,}$ approx $\text{\kern 0.08333em}$?
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9
How bad are the last 11 dry years in a row?
8
Why the effect of a triphasic capacitor could be as twice as its rated kVar? *(check Update 1)*
6
Approximation of the Fabius function with a quotient of exponentials