chol fails on Hermitian positive definite matrix?

I get the following code output on the attached matrix:

K>> max(max(abs(A-A')))

ans =

     0

K>> min(eig(A))

ans =

    0.0900

K>> chol(A)
Error using chol
Matrix must be positive definite.

Answer 1

[Christine Tobler]

That is astonishing. The matrix is not badly conditioned, I would expect CHOL to work fine here.

I tried on my machine and didn't get an error message from CHOL, so this seems related to your version or machine. Could you tell me what MATLAB version and what OS you're using?

[Marco Duarte]

K>> version

ans =

8.3.0.532 (R2014a)

OS is MacOS High Sierra 10.13.6

I tried the same operation with a newer version of Matlab (2018b) and chol(A) works. So it seems to be specific to R2014a.

[Christine Tobler]

I could reproduce this bug for MATLAB R2014a on a Mac. The bug did not appear on MATLAB R2014b on that Mac, and neither did it happen on MATLAB R2014a on Linux. This seems to be a version and OS-specific bug.