# REDUCE/Symbolic Scripts

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## by Dieter (Olli) Egger

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### Script Descriptions

- Solving equations: `algebra.txt`

- Analyzing functions: `analyze.red`
  - Decide on the function to be analyzed, for example `"f:=x**3 - 2*x**2;"`

- Properties: `boolean.txt`

- Analysis: `calculus.txt`

- Physical constants: establish definitions: constants.red; delete definitions: `clear_constants.red`

- Sine, cosine, tangent: `example01.red`

- Binomials, trigonometry, computational accuracy: `example02.red`

- Simple function analysis: `example03.red`

- Simple derivatives: `example04.red`

- Binomials, rules: `example05.red`

- Nested parentheses: `heron.txt`

- Hypergeometry and MeijerG: `hypermeijerg.txt`
  - Without LaTeX formatting OK.

- Integration, limits: `integLimit.red`

- Integration: `integral.txt`

- Introduction: `introReduce.txt`

- Linear algebra: `linalg.txt`

- Matrix inversion: `mat.red`

- Computation of space-time metrics
  - Metric-tensor from the equation of the hypersurface of a hypersphere, 2-dim: `metric2calc.red`, 3-dim: `metric3calc.red`, 4-dim: `metric4calc.red`
  - Riemann, Ricci, Einstein tensors and solution of the field equations, 2-dim: `metric2d.red`, 3-dim: `metric3d.red`, 4-dim: `metric4d.red`

- Dynamic variable names: `mkid.txt`

- Partial fractions: `partialFraction.txt`

- Energy of a photon (requires `constants.red` and `clear_constants.red`): `photonenergy.txt`

- Prefix operators: `prefix.txt`

- Programming: `programming.txt`

- Simple rules: `rules.red`

- Definition of a function: `scalprod.red`

- Speed of light: `speedoflight.txt`

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### Availability

- [English Homepage](https://reduce-algebra.sourceforge.io/tutorials/EggerScripts.en.php) (*English*)
- [German Homepage](https://reduce-algebra.sourceforge.io/tutorials/EggerScripts.php) (*German*)
- [GitHub Mirror](https://github.com/reduce-algebra/olli-scripts)
- [SourceHut Mirror](https://git.sr.ht/~trn/olli-scripts)
- [NotABug Mirror](https://notabug.org/reduce-algebra/olli-scripts)
- [Chisel Mirror](https://chiselapp.com/user/reduce-algebra/repository/olli-scripts/)

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### Author

- [DL2MIE](https://dl2mie.darc.de/) - Dieter *(Olli)* Egger's Homepage

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### Other Links

- [Symbolic for Android](https://play.google.com/store/apps/details?id=de.dieteregger.symbolic) - **REDUCE** for Android

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