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**Abstract**
We are working on implementing a Jacobian preconditioning method to accelerate chemical kinetics for large mechanisms in Cantera. The specific technique is referred to as adaptive prec…
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The classical way of performing an energy conserved PIC simulation is to adopt the Boris method (see [here](https://www.particleincell.com/2011/vxb-rotation/) and [here](https://www.astro.princeton.ed…
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Parcels currently lacks automatic computation of the derivative of a `Field`. A use case is computing the gradient in a diffusivity field. In the `AdvectionDiffusion` kernels, this is now implemented …
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Hi,
while I keep on discovering KeOps, I now have a question regarding symbolic implementation of the Laplacian. Assume I want to compute
\sum_j \Delta K(x_i-y_j)
where K is a standard Gaussian fun…
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Imported from SourceForge on 2024-07-04 18:08:41
Created by **[boud1](https://sourceforge.net/u/boud1/)** on 2022-01-19 19:46:06
Original: https://sourceforge.net/p/maxima/bugs/3922
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DESCRIPTION:…
rtoy updated
3 months ago
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This isn't an issue per se, but more of a request for comment. First, we have two separate algorithms for calculating numerical gradients. The first is a classic two point—well, technically three poin…
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**Data description**:There are 15 common viewpoints in 5 consecutive frames of data;
There is no common viewpoint between the 6th frame data and the previous 5 frames data…
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Hi Xing,
as you know `scipy.linalg.logm` will sometimes construct a complex matrix when applied to the orbital rotation matrix:
https://github.com/fishjojo/pyscfad/blob/08b57daa3279f915591a89810b0…
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Working through the examples in the tutorial (very nice, by the way), I can see how to hard-code the construction of the ``wrt`` argument for first- and second-order derivatives of a one-dimensional (…
ibell updated
5 years ago
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### Is your feature request related to a problem? Please describe.
I've been using `scipy`'s Savitzky-Golay filter multiple times in the past. Now I have a task where I would like to apply the filter…