I wish to write T in the subscript of \rho as

\rho_{\raisebox{-2pt}{\tiny T}}

But the desired case is: writing the T in the format of \mathcal. When I write

\rho_{\raisebox{-2pt}{\tiny \mathcal{T}}}

TeXStudio does not render it in a correct way!

How can I reach this goal?

  • 1
    your question is not clear. according to tile one should expect that you looking for $\rho_{\mathcal{T}}$ or \rho_{\mathcal{T}}^{}$. both works!
    – Zarko
    Commented Mar 13, 2018 at 6:26

2 Answers 2


The argument of \raisebox is considered text mode, you have to put $ $ around \mathcal{T}


   $\rho_{\raisebox{-2pt}{\tiny $\mathcal{T}$}}$

enter image description here

  • nice answer, however i wonder what is wrong with \rho_{\mathcal{T}}^{}$ as i wrote in my comment?
    – Zarko
    Commented Mar 13, 2018 at 6:50
  • @Zarko I didn't see your comment, I only corrected the error of the OP...
    – CarLaTeX
    Commented Mar 13, 2018 at 6:51
  • i know, i just wonder :-). your answer is correct (+1) :-)
    – Zarko
    Commented Mar 13, 2018 at 6:56

i wonder why you not use simple


 text  $\rho_{\mathcal{T}}$, text $\rho_{\mathcal{T}}^{}$

is something wrong with this?

enter image description here

according to rules how to set indices, i don't see what is wrong with this standard way of writing them.

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