I've tried detexify, but it does not identity the symbol I saw in a textbook "A Mathematical Introduction to Logic", by Herbert Enderton.
The symbol is composed of two parts. The left looks like the \models and the right looks like its mirror image. It stands for tautological equivalence in the book.
I am looking for either the right hand symbol so I can create the symbol, or the combination symbol.
Best Answer
See The Comprehensive Symbol List. Examples:
MnSymbol
mathabx
Symbol composition a la LaTeX
See Enrico Gregorio's comment. The definition of
\models
in LaTeX joins a vertical line|
with the double horizontal line\RelBar
.\reflectbox
If the current math fonts do not provide the mirrored
\models
, then packagegraphics
can help:Package
accsupp
The
/ActualText
feature of the PDF format improves the copy&paste behaviour for PDF viewers the support this feature (e.g. Adobe Reader). Example: