# How to type the symbol of viscous stress tensor? [duplicate]

How to insert the symbols shown below in LaTeX?

• Welcome to TeX.SE! Please see here how to look up symbols. Once you have found the first one, it will be easy to add the subscripts and superscripts. – user121799 Feb 22 '18 at 19:06
• Can you point to a source for the symbol? Is it universally used in your field? – egreg Feb 22 '18 at 19:10
• This symbol is used in Two-phase flow field and this is a symbol on Ishii's book. – Longcong Wang Feb 22 '18 at 19:13
• I have never seen this symbol for the viscous stress tensor. It's is usually just an S – user31729 Feb 22 '18 at 19:19
• This symbol seems like some mad font scientist was melting \mathscr and \mathfrac together by accident :) – Ruben Feb 22 '18 at 19:49

Is this close enough?

\documentclass{article}
\usepackage{yfonts}
\usepackage{graphics}
\newcommand{\StressTensor}{\rotatebox{-10}{\textgoth{T}}}
\begin{document}
$\textgoth{T}$ $\textgoth{T}^D$ $\textgoth{T}_{f}^{BI}$

$\StressTensor$  $\StressTensor^D$ $\StressTensor\!_{f}^{\,BI}$
\end{document}


EDIT: Just in case you want it even closer to your picture.

• Thx so much, I think this is good enough. – Longcong Wang Feb 22 '18 at 19:28
• When I try this, 'Font ygoth at 600 not found' error occured – Longcong Wang Feb 22 '18 at 19:32
• @LongcongWang Which TeX installation are you working with? Does this answer help? – user121799 Feb 22 '18 at 19:34
• I use TeXworks with MiKTex – Longcong Wang Feb 22 '18 at 19:37
• @LongcongWang Does this help? (Of course, you need to replace ccicons by yfonts.) And you may ask a separate question because some others know this stuff much better than me and can give you more competent advice. – user121799 Feb 22 '18 at 19:38

Another try is the Dobkin Script font (available here for instance as .ttf - hence the example below needs to be compiled with XeLaTeX or LuaLaTeX):

% arara: xelatex
\documentclass{article}
\usepackage{fontspec}
\newfontfamily{\dobscr}{Dobkin Script}
\DeclareTextFontCommand{\textscr}{\dobscr}
\usepackage{amsmath}
\DeclareMathOperator{\stresstensor}{\textscr{T}\kern2pt}

\begin{document}
$$\stresstensor$$

$$\stresstensor^D$$

$$\stresstensor_f^{BI}$$
\end{document}