How can I make a little wider bar ?! Is that possible without defining any new commands ?
Here is a screenshot of the entry on which I want to typeset a wider bar.
Best Answer
You can use Hendrik Vogt's code in his answer to a similar question, or use the \widebar command from mathabx.
Here is a way to use it without having to load the package:
It all depends on what do you want this glyph to stand for.
If you want to use it in an url then add \usepackage{url} (or hyperref) to your preamble and then use \url{http://example.com/~user}.
If you want to use it inside a math formula as some kind of relation then use $a \sim b$.
According to the "Comprehensive Symbols List", to get a vertically centered ~ you can use \texttildelow in any font other than Computer Modern, txfonts, and pxfonts. For example the following does the trick for typesetting a C++ destructor
\usepackage{times}
\usepackage{textcomp}
\texttildelow T
Your document source becomes readable: you can determine the meaning right there and then.
Your document becomes more flexible: if you decide to denote complex conjugation by a star instead you can simply redefine \conj without worrying about changing what \mean does.
You can change from \bar to \overline on a whim and don't have to make that crucial decision now.
Best Answer
You can use Hendrik Vogt's code in his answer to a similar question, or use the
\widebar
command frommathabx
.Here is a way to use it without having to load the package: