nalgebra-spacetime

Spacetime Extension for nalgebra

Present Features

• Minkowski space as special case of n-dimensional Lorentzian space.
• Raising/Lowering tensor indices: dual()/r_dual()/c_dual().
• Metric contraction of degree-1/degree-2 tensors: contr()/scalar().
• Spacetime interval() with LightCone depiction.
• Inertial OFrame of reference holding boost parameters.
• Lorentz boost as new_boost() matrix.
• Direct Lorentz boost() to compose() velocities.
• Wigner rotation() and axis_angle() between to-be-composed boosts.

Future Features

• Event4/Velocity4/Momentum4/... equivalents of Point4/....
• Categorize Rotation4/PureBoost4/... as Boost4/....
• Wigner rotation() and axis_angle() of an already-composed Boost4.
• Distinguish pre/post-rotation and active/passive Boost4 compositions.

Pseudo-local Documentation Builds

# Build and open documentation inclusive dependencies.
cargo doc --open
# Rebuild this crate's documentation with KaTeX.
cargo tex
# Refresh opened documentation.

With cargo tex defined in .cargo/config.toml. Note that navigating the documentation requires web access as KaTeX is embedded via remote CDN.

License

Copyright © 2020,2021,2024 Rouven Spreckels rs@qu1x.dev

This project is licensed under either of

• Apache License, Version 2.0, (LICENSES/Apache-2.0 or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSES/MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this project by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.