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I am using the stmaryrd package and I have to increase the size of "bag" bracket, but unfortunately the usual commands \big, \Big, \biggl, \Biggl, \left, \right do not work, so that I thought to put a specific question here to ask for a solution: I point out I tried to use what illustrated here but unfortunately it does not work.

Hoping the question would be more clear I point out I have written something like this

\big\Lbag\Lbag x\Rbag\big\Rbag

without fraction into the argument.

The code I am using follows:

    \documentclass[10pt]{article}

\usepackage[paperheight=29.7cm,paperwidth=21cm,textwidth=17cm,textheight=25 cm]{geometry}


\usepackage{amssymb} 
\usepackage{stmaryrd} 
\usepackage{amsmath}


\begin{document}
$$
\biggl\Lbag\Lbag x\Rbag\biggl\Rbag
$$
\end{document}
Antonio Maria Di Mauro
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    you say you are using stix, but your code (which is far from minimal) loads \usepackage{amsfonts} not stix , it also does not appear to have any example use of the characters you are asking about. – David Carlisle Aug 06 '23 at 14:14
  • @DavidCarlisle Sorry, my bad: I was referring to stmaryrd package. Forgive my confusion. – Antonio Maria Di Mauro Aug 06 '23 at 14:19
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    please edit your example to make it more reasonable for people to trace. Do you need \usepackage{caption} to show the issue for example? and add an example of the problem. – David Carlisle Aug 06 '23 at 14:23
  • @DavidCarlisle I simplify the code putting all package I am using. I do not understand unfortunately how I could use caption package to show the problem. However I can reaffirm that I would simply increase the size of \Lbag and \Rbag delimiters as I do for standard delimiters using the commands \big,\Big,\biggl,\Biggl,\left and \right which now do not works: e.g. If I put the command $\big\Lbag\Lbag x\Rbag\big\Rbag$ then simply $\Lbag\Lbag x\Rbag\Rbag$ appears and the compilator give an error. I hope now the problem is more clear. – Antonio Maria Di Mauro Aug 06 '23 at 14:33
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    @AntonioMariaDiMauro A minimal working example should only have the package necessary to reproduce the problem, not all your packages. – samcarter_is_at_topanswers.xyz Aug 06 '23 at 14:37
  • @samcarter_is_at_topanswers.xyz I put all packages because I cannot know if a proposed solution can be incompatibile with respect others packages I am using: however if you believe it is better you can modify the example code. – Antonio Maria Di Mauro Aug 06 '23 at 14:39
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    That's not how this works … It is your job to remove packages one by one: Does the problem still persist? Remove another one. A minimal working example is exactly that: Code reduced as much as possible, which still compiles and shows your problem. – Ingmar Aug 06 '23 at 14:49
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    @Ingmar I did: this appears to be the shortest and least error-prone code possible. – Antonio Maria Di Mauro Aug 06 '23 at 14:55
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    @AntonioMariaDiMauro Do you really need the geometry package to reproduce a problem with a font? – samcarter_is_at_topanswers.xyz Aug 06 '23 at 15:15
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    Also your question starts with I am using the stix package, but your code does not. Can you unify your question text and your code? – samcarter_is_at_topanswers.xyz Aug 06 '23 at 15:17

1 Answers1

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The character isn't defined as extensible in fonts I have seen, but if you really need it you could apply scaling

enter image description here

\documentclass[10pt]{article}

\usepackage[paperheight=29.7cm,paperwidth=21cm,textwidth=17cm,textheight=25 cm]{geometry}


\usepackage{amssymb} 
\usepackage{stmaryrd,graphicx} 
\usepackage{amsmath}


\begin{document}
[
\mathopen{\scalebox{2}{$\Lbag$}}\Lbag x\Rbag\mathclose{\scalebox{2}{$\Rbag$}}
]
\end{document}
Antonio Maria Di Mauro
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David Carlisle
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