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Oct 26, 2021 at 19:55 history edited Carlo Beenakker CC BY-SA 4.0
answer to question as originally formulated
Oct 26, 2021 at 16:35 comment added Bee You are right, Carlo. I realized I asked a non-sense. I have reformulated the question, basically, I am interested in a function that has a gradient with a factor of $\mathrm{Tr}[(I-X)^{-1}]$
Oct 26, 2021 at 10:20 history answered Carlo Beenakker CC BY-SA 4.0