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I am surprised that WRI never checks previous examples before shipping new versions. The following example is mentioned and highlighted on the webpage. It does not work in 12.1.1.0 and as far as I remember it used to work in older version 12.0 perhaps. Does someone else has trouble running this example with a fresh kernel. I have filed a bug report nevertheless Case number 4696657

https://www.wolfram.com/language/12/convex-optimization/minimal-bounding-ellipsoid.html?product=mathematica

I get this output below:

enter image description here

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  • $\begingroup$ Likely a typo: try ConicOptimization instead of NMinimize. $\endgroup$
    – user64494
    Commented Nov 11, 2020 at 16:02
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    $\begingroup$ Or SemidefiniteOptimization. Contact WTS. $\endgroup$
    – user64494
    Commented Nov 11, 2020 at 16:13
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    $\begingroup$ @user64494 Did you pay attention that in this example we minimize nonlinear function -Log[Det[a]], while with SemidefiniteOptimization[] and ConicOptimization[] we minimize the linear objective function? Also I have tested that this example works fine in v. 12.0.0.0, but it is not working in v.12.1.1.0. $\endgroup$
    – Alex Trounev
    Commented Nov 11, 2020 at 22:32

1 Answer 1

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The issues seems to be have been resolved in V13.0.0

resolved

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