How do you typeset "banana" brackets?

Question

I'm looking to place an equation between so called "banana" brackets, that look like the ones in this question.

How can I do that?

Special case of symbols - Double square brackets - TeX - LaTeX Stack Exchange — user202729, Oct 26 '22 at 18:57
Your question is answered in this question: https://tex.stackexchange.com/questions/408066/symbol-for-anamorphism: Use \llparenthesis and \rrparenthesis from the stmaryrd package. — corvus_192, Oct 27 '22 at 07:57

score 7 · Accepted Answer · answered Oct 26 '22 at 14:44

7

One possibility using stix:

\documentclass{article}
\usepackage{stix}
\begin{document}
[
\llparenthesis x \rrparenthesis
]
\end{document}

answered Oct 26 '22 at 14:44

Also \left\lParen \frac{a}{b} \right\rParen. – John Kormylo Oct 26 '22 at 15:45
@JohnKormylo I'd love to see your approach as an answer! – samcarter_is_at_topanswers.xyz Oct 26 '22 at 20:05
Just add it to yours. It was your idea to use stix. – John Kormylo Oct 26 '22 at 21:36

1 Answers1