## pricing.alpha_between_frequency_and_layer()


The Pareto alpha at which [frequency](pricing.TowerModel.md#prospicio.pricing.TowerModel.frequency) losses a year above


Usage


``` python
pricing.alpha_between_frequency_and_layer(
    threshold, frequency, limit, attachment, expected_loss, truncation=None
)
```


[threshold](risk.PotTail.md#prospicio.risk.PotTail.threshold) give the layer an expected loss of [expected_loss](pricing.Price.md#prospicio.pricing.Price.expected_loss).


## Parameters


`threshold: float`  

`frequency: float`  

`limit: float`  

`attachment: float`  

`expected_loss: float`  

`truncation: float = None`  


## Returns


`float`