Re: undertilde is not in TeXLive

El 27.10.2017 a las 17:42, John Robert Hudson escribió:

> I understand now; the undertilde package is no longer part of TeXLive but the
> undertilde character is provided by the wsuipa package

Yes. But the math manual referred to an accent while the wsuipa package 
only provides \undertilde as single character. So the note from JPierre 
is valid.

LyX supports the undertilde package natively as you can see in the 
document settings under "Math Options".
I'll try to contact the author of the undertilde package to clarify the 
license.

regards Uwe