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In this topic I can't see the reason for some indices looks like not being indices. I've done something wrong or is there a LaTeX bug?

Thanks.

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Fixed it. For some reason you typed an "empty" character between the underscore _ and the q. So the action of the underscore hit the empty character instead of the letter q.

Removing the zero-width character fixed the problem.

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  • $\begingroup$ Thank you. Actually wasn't me, I just copied a question of someone else, but for some reason I didn't see that empty character. $\endgroup$ – user26857 Jun 25 '13 at 10:41
  • $\begingroup$ @YACP: can't blame you for not seeing, since that is the whole point of a zero-width character... $\endgroup$ – Willie Wong Jun 25 '13 at 10:42
  • $\begingroup$ The original post by fbakhshi was riddled with \unicode{0x200E} characters (LEFT-TO-RIGHT MARK). I removed the rest from YACP's post. $\endgroup$ – robjohn Jun 25 '13 at 12:38

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