# Theory

- [Algorithm](/freepaths/theory/algorithm.md): General flow of the simulation
- [Thermal conductivity](/freepaths/theory/themal-conductivity-calculation.md): Calculation of thermal conductivity via Fourier law or MFP
- [Electrical conductivity](/freepaths/theory/electrical-conductivity.md): Theory behind electron simulations
- [Other equations](/freepaths/theory/equations.md): Math behind the simulations
- [Transmission equations](/freepaths/theory/transmission-equations.md): Formalism used to model transmission through thin layers or another material