# Core package

The core page documents the package-level exports together with the
utility modules that support kinematics and nuclear data, and shared helper
functions.

```{eval-rst}
.. automodule:: jitr
   :members:
```

## Utilities

The `jitr.utils` package re-exports the most common helper modules and
functions. The defining modules are documented below so objects only
appear once in the API index.

```{eval-rst}
.. automodule:: jitr.utils.constants
```

```{eval-rst}
.. automodule:: jitr.utils.free_solutions
   :members:
```

```{eval-rst}
.. automodule:: jitr.utils.kinematics
   :members:
```

```{eval-rst}
.. automodule:: jitr.utils.utils
   :members:
```

```{eval-rst}
.. automodule:: jitr.utils.mass
   :members:
```