Is there a better way to get the symbol produced by V\llap{--}? I need it in math mode. The symbol is someitmes used to represent volume. The above hack is not the right symbol but something close.

  • How about \forall? Does it fit your requirements? – Count Zero Aug 27 '12 at 12:29
  • @CountZero I need the dash to extend beyond the V. – mythealias Aug 27 '12 at 12:37
  • Can you please upload (provide a link to) an image showing the desired symbol used in context? – Gonzalo Medina Aug 27 '12 at 13:05
  • @GonzaloMedina the symbol is usually used when writing Reynolds transport equation. This pdf file shows it in use. – mythealias Aug 27 '12 at 17:36

enter image description here

A better implementation, where the dash is built as above, but over a phantom V; the real one is added later, so subscripts and superscripts are placed with respect to it.


    \ooalign{\hfil\hphantom{$\m@th V$}\hfil\cr\kern0.08em--\hfil\cr}%







enter image description here

  • There are kerning issues here if you want a subscript, as in \volume_n. Also, as a differential, \mathrm{d}\volume has incorrect spacing. This issue is addressed in a solution to another question. Are there any issues with that solution? – Sandy G Jan 10 '18 at 20:15
  • @SandyG The subscript problem is solved by using a phantom V in the \ooalign and a real V afterwards. Thanks for pointing to the weakness of the original macro. – egreg Jan 10 '18 at 22:48

I was looking for the same thing, but found it a bit distracting to have the cross extend beyond the lines of the V. I came up with an alternative approach:




    Let $\Vol$ represent system volume.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.