Mathematics
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Joako
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question
24
Are these equations "properly" defined differential equations? (finite duration solutions to diff. eqs.)
May 17, 2022
answer
7
Why do we say that the inner product "captures" the notion of "angle"?
Jan 28
question
6
Is the solution to $\theta''+0.021\,\text{sgn}(\theta')\sqrt{|\theta'|}+0.02\sin(\theta)=0,\,\theta_0=\pi/2,\,\theta'_0=0$ of finite duration?
Mar 20, 2022
question
6
Does Lipschitz-kind "non-scalar ODEs" and PDEs could stand having finite-duration solutions?
Apr 21, 2022
question
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
question
5
Is this function an alternative solution to the nonlinear pendulum?
Feb 24, 2022
question
5
Confusions when differentiating a Fourier Transform and using the Kramers-Kronig relations
Jul 12, 2022
question
5
Confusion with the Fourier Transform and Complex Differentiability: example with compact-supported function
Jul 25, 2022
question
5
Are there any non-constant "smooth bump functions" in "closed form" whose Fourier Transforms are also in closed form?
Oct 18, 2021
question
5
What are the solutions for $y(t)\cdot\left(y'(t) + a\right)=-b\sin(t)$?
Jan 9, 2022
Top Meta posts
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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)*

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