Does not calculate eigenvalues for singular matrices

[khayyam90]

Hi,

It's me again, still with the eigen vector calculation. I have another case ending with an error :

let m = mat([
        [2,-1,-1],
        [-1,2,-1],
        [-1,-1,2]
        ]);
        let e = eig(m);

Uncaught Error: A is singular; no QR decomposition exists but the eigen values do exist : 3,3,0

[jbrown1618]

That is helpful - I'm using the QR algorithm to find the eigenvalues, but my implementation chokes on singular matrices.

[jbrown1618]

The right solution is, I think, to fix my QR algorithm implementation (rather than try a different method when it fails). The QR factorization exists for singular matrices (but the result is not unique).

[jbrown1618]

It might be necessary to use an algorithm other than Graham-Schmidt for the QR decomposition.

[github-actions[bot]]

:tada: This issue has been resolved in version 4.1.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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