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Selected LaTeX Math Symbols

Note: there is another version of this document featuring HTML entities for math symbols, as well as LaTeX commands.
Relational Operators (math mode)
Symbol	Command	Comment
$equivalent$	`\equiv`
$approximately$	`\approx`
$proportional$	`\propto`
$roughly equal$	`\simeq`
$similar$	`\sim`
$not equal$	`\neq`
$greater than or equal$	`\geq`
$far greater than$	`\gg`
$far lesser than$	`\ll`
Logic Symbols (math mode)
Symbol	Command	Comment
$bullet$	`\bullet`
$not$	`\neg`
$conjunction$	`\wedge`
$disjunction$	`\vee`
$exclusive or$	`\oplus`
$implication$	`\Rightarrow`
$equivalence$	`\Leftrightarrow`
$exists$	`\exists`
$for all$	`\forall`
Set Symbols (math mode)
Symbol	Command	Comment
$intersection$	`\cap`
$union$	`\cup`
$superset$	`\supset`
$subset$	`\subset`
$empty set$	`\emptyset`
$set of integers$	`\mathbb{Z}`	requires the `amsfonts` and `amssymb` packages
$belongs to$	`\in`
$does not belong to$	`\notin`
$join$	`\Join`	requires the `latexsym` package (present in most LaTeX distributions)
Miscellaneous Symbols (math mode)
Symbol	Command	Comment
$prime$	`\prime`
$infinity$	`\infty`
Non-English Characters and Accents
Symbol	Command	Comment
é	`\'e`	e is only given here as an exemple, and the commands can be used with the other characters. Only i and j deserve special commands
è	\`e
ê	`\^e`
ë	`\"e`	ë
ñ	`\~n`	ñ
å	`\aa`	å
ï	`\"\i`	ï	the cammands `\i` and `\j` are used to generate dot-less i and j characters.
ç	`\c{c}`	ç
ß	`\ss`	ß
æ	`\ae`	æ	also \AE, \oe and \OE
£	`\pounds`	£
€	`\euro`	€	several packages exist to provide support for the euro symbol, but one of them needs to be installed.
If you do not find here what you are looking for, you may want to download the comprehensive LaTeX symbols guide.