How to forbid symbol in the begin and end of group of letters and numbers
7336
What is the best regular expression to check if a string is a valid URL?
48717
The line produced by \not looks bad on wider symbols
97025
Can I get $$...$$ to behave like \[...\]?
115136
Number sets symbols in LaTeX
58239
Symbols for left and right limits
110890
How to prevent non-alphanumeric input in javascript?
121046
How do I remove ï»¿ from the beginning of a file?
107061
Correct way to typeset 'implies' symbol
37480
Leave only two decimal places after the dot
127860
A regular expression to exclude a word/string
142233
How to create symbol whose name has subscript?
39413
How do I clear all user defined symbols?
17939
How do I remove alphabetical grouping of acronyms in the list?
97251
Is it a bad idea to use \begin{section} ... \end{section} in LaTeX?
100787
How do I remove all specific characters at the end of a string in PHP?
66950
Remove characters except digits from string using Python?
53104
How to properly typeset multiletter quantities, e.g. Re or Nu (Reynolds, Nusselt numbers)