I can not clear this variable. How to clear?
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$\begingroup$ See mathematica.stackexchange.com/questions/373/… or mathematica.stackexchange.com/questions/128498/…, perhaps. $\endgroup$– Michael E2Jul 18, 2021 at 4:40
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1$\begingroup$ People here generally like users to post code as Mathematica code instead of just images or TeX, so they can copy-paste it. It makes it convenient for them and more likely you will get someone to help you. You may find the meta Q&A, How to copy code from Mathematica so it looks good on this site, helpful $\endgroup$– Michael E2Jul 18, 2021 at 4:41
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$\begingroup$ Clear[Subscript] $\endgroup$– cvgmtJul 18, 2021 at 5:33
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$\begingroup$ For yet one more complication of this phenomenon in the setting of assigning values to spans of subscripted variables, see mathematica.stackexchange.com/questions/249706/… $\endgroup$– Nicholas GJul 18, 2021 at 6:48
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1 Answer
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To clear Mathematica variables that are not symbols you set them equal to .
Subscript[\[Sigma], \[Epsilon]] =.
This will clear it.
Don't use subscripts. Mathematica does not not handle them very well and in general they cause nothing but problems.
answered Jul 18, 2021 at 7:23