I found this post, which explains orthogonal and not orthogonal symbols.
I was able quickly to find the orthogonal symbols as \perp
, \upvdash
etc., but not able to find a top line which strikes the sign from the top left to bottom right. One idea is to combine to symbols e.g., use one of the aboves and add the line in top of it. However I don't know how to do it.
Best Answer
To negate the
\perp
(perpendicular) symbol, the command\not\perp
provides a simple solution, but this negated symbol doesn't look that great IMHO:If you load the
mathabx
package, you get the command\notperp
which looks pretty good, as does now the output of\not\perp
. The same effect can be achieved if you load either theMnSymbol
package or thefdsymbol
package and use the command\notperp
(same name used by both packages). Notice, though, that even if you load theMnSymbol
of thefdsymbol
package, the output of\not\perp
still looks pretty bad, i.e., as bad as if you hadn't loaded any extra package at all.Addendum: Following a request by the OP, here's an MWE that shows how to load the
mathabx
package and generate the symbol using the package's\notperp
macro, as well as with\not\perp
"Next, here's an MWE that shows the use of the
MnSymbol
package to generate these symbols:Finally, with the use of the
fdsymbol
package and its\nperp
macro:Happy TeXing!