# What would be the special character for this mathematical notation?

What would be the special character for this mathematical notation?

And how do I enter the $H$ and $0$? What are the Special Characters?

• If all you are trying to do is format the expression then (V == HoldForm[A/H^2] Subsuperscript[Abs[HoldForm[h^3/3]], 0, H]) // TraditionalForm – Bob Hanlon Jun 13 '17 at 15:34
• This is the list of all special characters: reference.wolfram.com/language/guide/… – b3m2a1 Jun 13 '17 at 15:45
• @Kuba For kindness Could you review if the title and content is more compatible with my need? – LCarvalho Jun 13 '17 at 16:35

\[DoubleVerticalBar] behaves like a binary operator (often used to indicate parallel lines in geometry). You probably want

Subsuperscript[\[LeftDoubleBracketingBar] h/3 \[RightDoubleBracketingBar], 0, H] //

• @LCarvalho You could try one of the free online $\LaTeX$ interpreters, e.g. latexbase.com – MarcoB Jun 13 '17 at 17:10
(V == HoldForm[A/H^2] Subsuperscript[Abs[HoldForm[h^3/3]], 0, H])