## pricing.alpha_between_layers()


The Pareto alpha at which two layers have the given expected losses.


Usage


``` python
pricing.alpha_between_layers(
    a,
    b,
    truncation=None,
)
```


## Parameters


`a: tuple of float`  
`(limit, attachment, expected_loss)`.

`b: tuple of float`  
`(limit, attachment, expected_loss)`; one layer must lie above the other.

`truncation: float = None`  


## Returns


`float`