:orphan:

Implementation and workflows
============================

This section explains how Quantas turns the scientific models described in
:doc:`../theory/index` into reproducible numerical workflows.  The emphasis is
not on private classes or source-code organization, but on the scientific and
numerical decisions exposed to users:

- which representation is fitted or interpolated;
- which approximation is selected by default and why;
- which alternatives are available;
- which diagnostics must be inspected;
- which controls change accuracy, robustness, memory use, or execution time;
- which warnings indicate extrapolation or a degraded calculation.

The pages complement, but do not duplicate, the worked examples in
:doc:`../tutorials/index` or the exact option syntax in :doc:`../cli/index`.

- :doc:`concepts/index`
- :doc:`ha`
- :doc:`qha`
- :doc:`elasticity`
- :doc:`seismic`
- :doc:`eos`
- :doc:`thermoelasticity`
- :doc:`interoperability`