Metadata-Version: 2.4
Name: racah
Version: 0.1.0
Summary: The Racah algebra, compiled — spectroscopy layer of the spectrafold Origami ISA engine.
Project-URL: Homepage, https://github.com/roguetrainer/racah
Project-URL: Repository, https://github.com/roguetrainer/racah
Project-URL: Documentation, https://roguetrainer.github.io/racah/
Author-email: "Ian R. C. Buckley" <ian.r.c.buckley@gmail.com>
License: MIT
License-File: LICENSE
Keywords: 6j-symbols,angular-momentum,atomic-physics,categorical-quantum-mechanics,exact-arithmetic,g2-wall,nuclear-physics,origami-calculus,racah-algebra,spectroscopy
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Science/Research
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Scientific/Engineering :: Chemistry
Classifier: Topic :: Scientific/Engineering :: Physics
Requires-Python: >=3.10
Requires-Dist: spectrafold>=0.1.0
Provides-Extra: dev
Requires-Dist: pytest>=7.0; extra == 'dev'
Description-Content-Type: text/markdown

# racah

**The Racah algebra, compiled.**

This package is the spectroscopy-specialised layer of [spectrafold](https://github.com/roguetrainer/spectrafold).

```bash
pip install spectrafold   # the full library
pip install racah         # this stub (re-exports spectrafold)
```

```python
import racah

racah.flop(0, 1, 1, 1, 1, 1)    # 6j symbol {0 1 1; 1 1 1} = -1/3
racah.pandya_transform(...)       # Pandya transform as FLIP;FLOP
racah.g2_casimir(1, 0)            # G2 Casimir for the fundamental 7-dim irrep
```

All results are exact sympy expressions — no floats, no rounding.

## Papers

| Paper | DOI |
|-------|-----|
| 347 Spiders for Spectra  | [10.5281/zenodo.20458996](https://doi.org/10.5281/zenodo.20458996) |
| 348 Spiders for Nuclei   | [10.5281/zenodo.20490046](https://doi.org/10.5281/zenodo.20490046) |
| 349 The Origami Calculus | [10.5281/zenodo.20474914](https://doi.org/10.5281/zenodo.20474914) |
| 350 Spiders for Quarkonium | [10.5281/zenodo.20490294](https://doi.org/10.5281/zenodo.20490294) |

## License

MIT. Author: Ian R. C. Buckley.
