Math4Devs

List of mathematical symbols with their JavaScript equivalent.

Symbol	Name	Since	Example
â	Horizontal bar for division	~1300	$\frac{a}{b}$
+	Plus sign	1360	$a + b$
-	Minus sign	1489	$a â b$
â	Radical symbol	1525	$x$
(...)	Parentheses	1544	$(a + b)$
=	Equals	1557	$a = b$
.	Decimal separator	1593	$1.75$
Ã	Multiplication sign	1618	$a Ã b$
Â±	Plusâminus sign	1628	$a Â\pm 2$
â¿â	Radical symbol for nth root	1629	$n a$
<	Strict inequality less-than	1631	$a < b$
>	Strict inequality greater-than	1631	$a > b$
xÊ¸	Superscript notation	1636	$a^{b}$
x	Use of the letter x for an independent variable or unknown value	1637	$x$
%	Percent sign	1650	$n %$
â	Infinity sign	1655	$â$
Ã·	Division sign	1659	$a Ã\cdot b$
â¤	Unstrict inequality less-than sign	1670	$a â¤ b$
â¥	Unstrict inequality greater-than sign	1670	$a â¥ b$
d	Differential sign	1675	$m = \frac{d y}{d x}$
â«	Integral sign	1675	$â«_{1}^{8} f (x) â d x$
:	Colon for division	1684	$a : b$
Â·	Middle dot for multiplication	1698	$a â b$
â	Division slash	1718	$a / b$
â	Inequality sign	unknown	$a î = b$
x'	Prime symbol for derivative	1748	$x^{â²}$
Î£	Summation symbol	1755	$i = 0 â 10 i$
â	Proportionality sign	1768	$\frac{x}{y} Î\pm \frac{a}{b}$
â	Partial differential sign	1770
â¡	Identity sign	1801	$a â¡ b$
[x]	Integral part (aka floor)	1808	$[x]$
!	Factorial	1808	$n!$
Î	Product symbol	1812	$x = 2 â 4 (x + 1)$
â	Set subset of	1817	$a â b$
â	Set superset of	1817	$a â b$
\|...\|	Absolute value notation	1841	$â£ x â£$
â...â	Matrix notation	1843	$â¥ x â¥$
â©	Intersection	1888	$a â© b$
âª	Union	1888	$a âª b$
â	Membership sign	1894	$a â b$
{...}	Curly brackets for set notation	1895	${x, y, z}$
â	Existential quantifier (there exists)	1897	$(â x) f (x)$
Â·	Dot product	1902	$a â b$
Ã	Cross product	1902	$a Ã b$
â¨	Logical disjunction (aka OR)	1906	$a â¨ b$
(...)	Matrix round bracket notation	1909	$(a x b y c z)$
[...]	Matrix square bracket notation	1909	$[a x b y c z]$
â	Universal quantifier (for all)	1935	$(â x) f (x)$
â	Empty set sign	1939	$â$
âxâ	Greatest integer â¤âx (aka floor)	1962	$â x â$
âxâ	Smallest integer â¥âx (aka ceiling)	1962	$â x â$