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# Volumential
Volumential (VOLUME poteNTIAL) provides toolset to solve volume potential integral equations
efficiently via Fast Multipole Method.
[Name `volumential` courtesy of Andreas Klöckner.](https://gitlab.tiker.net/xywei/volumential/issues/2)
This repository uses `git-lfs`.
**NOTE**: If you would like to skip downloading large resource files (IPython
notebooks etc.), use
```
GIT_LFS_SKIP_SMUDGE=1 git clone SERVER-REPOSITORY
```
This does not affect using the library.
Volumential is under the MIT license.
## Singular Integral Methods
- `Transform`: Apply coordinate transforms to remove the singularity (or, hide the singularity into the Jacobian of the transform).
- `DrosteSum`: Subdivide the box iteratively into layers of "bricks" towards the singular point. The name comes from **Droste effect** ([Wikipedia](https://en.wikipedia.org/wiki/Droste_effect)).
## Notes on meshgen_dealii
A simple way to compile `meshgen_dealii`:
- Install everything in `conda-forge`
- Download `deal-ii` and compile it with all things disabled (~15min)
- Build `meshgen11_dealii` under `contrib` in the conda env (`python 3.6` must be used)
Volumential is developed and released under the terms of the MIT license,
though it also makes use of third-party packages under their own licensing
terms. See the [LICENSE](./LICENSE.md) file for details.
We would like to thank people and organizations that contributed to or supported the
Volumential project. See [ACKNOWLEDGEMENTS](./ACKNOWLEDGEMENTS.md) for details.