Miscellaneous Symbols

Miscellaneous Symbols This is a list of the most common miscellaneous symbols.
Symbol	Symbol	Definition	Example
$a^n$	-	power, an exponent	$5^4 = 3125$
%	-	percent, $1$ % $= 1/100$	$5$ % $\times 4 = 0.2$
$\Phi$	Phi	golden ratio	$1 : 1.6180339887...$
$\pi$	pi	Pi	$\pi = 3.141592654...$
$e$	-	Euler's number constant	$e = 2.718281828...$
$\gamma$	gamma	Euler-Mascheroni constant	$\gamma = 0.5772156649...$
$x!$	-	fractional	$5!=5\;x\;4\;x\;3\;x\;2\;x\;1=120$
$\int$	int	integral, adding slices to find the whole	$\int 2x \; dx$
$\sum$	sum	sigma, summation or sum of all	$\sum_{n=4}^8 n = 4+5+6+7+8=30$
$\exists$	exists	there exists
$\nexists$	nexists	there does not exists
$\forall$	forall	for all
$\infty$	infty	infinity
$\propto$	propto	porportional to	$\frac{1}{4} \propto \frac{2}{8}$
$i$	-	imaginary number	$i=\sqrt{-1}$