Math & Science ⇒ command opposite to \vec

[andrew]

Good afternoon!

I've faced a problem - if I need a vector from left to right, I can use \vec. Whay should I do if I need the same arrow from right to left. Things like \overleftarrow are not good enough... Especially when their is only one symbol
like \overleftarrow\sigma

I mean I need to get the arrow exactly like the \vec one, but in the opposite direction. Excuse for not accuratness.

[localghost]

Load the amsmath package and it will provide a suitable command.

Code: Select all

\[
  \overleftarrow{AB}
\]

Note that the arrows appears different from that of a vector.


Best regards and welcome to the board
Thorsten¹

Remark:
After the original post has been edited and the request as well as the demands were modified, this reply became completely useless.