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  • $\begingroup$ The actual code that generated the error is likely easier to work with than the latex equations. Consider either giving the code for the matrix and dropping the xact part (which diminishes your chances of getting an answer since probably few people here work specifically with tensor algebra) or directing your question to be specific about xact output/notation and providing the code you used so far. $\endgroup$ Commented Dec 28, 2022 at 15:19
  • $\begingroup$ I have edited my question with some code, if it is not sufficient, let me know and I will add more. :-) $\endgroup$ Commented Dec 28, 2022 at 18:32
  • $\begingroup$ I get a "IsIndexOf::nouse: Attempting to apply IsIndexOf on q[x[]]" and a "Throw::nocatch: Uncaught Throw[ERROR[q[x[]]]] returned to top level error" when evaluating your code $\endgroup$ Commented Dec 28, 2022 at 18:49
  • $\begingroup$ Consider copy pasting the matrix $\endgroup$ Commented Dec 28, 2022 at 18:50
  • 1
    $\begingroup$ sorry in option 1 I meant will not affect the code in EigenValues $\endgroup$ Commented Dec 28, 2022 at 20:14