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When?
- If using (tensor product) Gauss-Legendre points,
- or if using Lobatto-Gauss-Legendre points with permission to lump (#348).
This is related to #349, but for the inverse operator.
Samp…
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### Describe your issue.
~~ellipeinc and ellipkinc are broken.~~ Please either a) extend the domain of the Legendre elliptic integrals to include $1 < m < \frac{1}{\sin^2\phi}$ or b) document that …
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Interpolation functions have not been implemented yet for the new discretizations introduced in #149. They will be needed eventually to support moment-kinetic simulations, or collisions between differ…
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The following valid Julia code (that runs perfectly fine) gives the red squiggle which I've posted a screenshot of directly after:
```julia
n = 250;
Nbf = 15 + 2; # We're stripping a couple off, s…
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If I do `lambdify(x,sp.legendre(m,x),'numpy')` and plot the corresponding legendre polynomial for relative high degree (e.g. n = 44) in the interval [-1 , 1], the function diverges at the edges.
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As pointed out in #25034 and https://groups.google.com/g/sage-devel/c/IDtiGF6HB28/m/QWwnAeLJBAAJ there is currently a conflict of conventions.
The current implementation is in line with [1], but as…
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Issue reported by Nicolas Legendre (https://github.com/NicolasLegendre1)
For this code:
![image](https://user-images.githubusercontent.com/8267869/128795411-3d82704f-0be6-4be1-810b-cd9444dbd179.pn…
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Hi Xinyu,
I ran into errors while compiling SurfTracker.
Scanning dependencies of target main
[ 4%] Building CXX object CMakeFiles/main.dir/main.cpp.o
In file included from /tmp/Sur…
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The power series used for small arguments in `eval_legendre` performs poorly for even `n` particularly as `n` becomes large. In this case, using the recurrence directly appears to be better. Althoug…
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I would love to work on this.