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From "Gilles (JIRA)" <>
Subject [jira] [Commented] (MATH-1004) Inversion of diagonal matrix
Date Sat, 12 Oct 2013 16:04:42 GMT


Gilles commented on MATH-1004:

bq. [...] adding MatrixUtils.inverse(RealMatrix) and have it just do the instanceOf check

Do you mean that we would forbid users to call this method on an invertible matrix that happens
to not be of the "DiagonalMatrix" type?

bq. [...] whether or not to add inverse(DiagonalMatrix) to the public API. 

IMHO, we should avoid crowding "XxxUtils" classes. IOW, there should be a good reason why
the method cannot be somewhere else.

> Inversion of diagonal matrix
> ----------------------------
>                 Key: MATH-1004
>                 URL:
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Ajo Fod
>            Priority: Minor
>         Attachments: MATH-1004.patch
> This should be a very easy feature to add and has many applications. 

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