bundles / scipy 1.17.1 / scipy / sparse / linalg / _expm_multiply / _compute_cost_div_m

function

`scipy.sparse.linalg._expm_multiply:_compute_cost_div_m`

source: /scipy/sparse/linalg/_expm_multiply.py:460

Signature

def _compute_cost_div_m(m, p, norm_info)

Summary

A helper function for computing bounds.

Extended Summary

This is equation (3.10). It measures cost in terms of the number of required matrix products.

Parameters

m : int: A valid key of _theta.
p : int: A matrix power.
norm_info : LazyOperatorNormInfo: Information about 1-norms of related operators.

Returns

cost_div_m : int: Required number of matrix products divided by m.

Aliases

scipy.sparse.linalg._expm_multiply._compute_cost_div_m