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    $\begingroup$ But then, why do you need to do this? $\endgroup$ Commented Jan 15, 2017 at 19:22
  • $\begingroup$ I just prefer the notion style for readability. $\endgroup$ Commented Jan 15, 2017 at 19:29
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    $\begingroup$ The best advice about working with Subscripts is: don't use them. See here, here, and here. $\endgroup$ Commented Jan 15, 2017 at 19:41
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    $\begingroup$ @corey979 Duly noted. It can be done, its just probably not worth it. Lesson of the day don't use subscripts. $\endgroup$ Commented Jan 15, 2017 at 20:01
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    $\begingroup$ @ corey979 This has been the common opinion for many years. However, recently I started to notice that the expressions with subscripts work in situations they have not work before, and started to use subscripts, especially in tensor expressions, being very careful in cross-checking the results with and without subscripts. It seems to work. May it be an improvement of the latest Mma version? $\endgroup$ Commented Jan 16, 2017 at 7:42