Math4Devs

List of mathematical symbols with their JavaScript equivalent.

Symbol	Name	Since	Example
―	Horizontal bar for division	~1300	$\frac{a}{b}$
+	Plus sign	1360	$a + b$
-	Minus sign	1489	$a - b$
√	Radical symbol	1525	$x$
(...)	Parentheses	1544	$(a + b)$
=	Equals	1557	$a = b$
.	Decimal separator	1593	$1.75$
×	Multiplication sign	1618	$a \times b$
±	Plus–minus sign	1628	$a \pm 2$
ⁿ√	Radical symbol for nth root	1629	$n a$
<	Strict inequality less-than	1631	$a < b$
>	Strict inequality greater-than	1631	$a > b$
xʸ	Superscript notation	1636	$a^{b}$
x	Use of the letter x for an independent variable or unknown value	1637	$x$
%	Percent sign	1650	$n %$
∞	Infinity sign	1655	$\infty$
÷	Division sign	1659	$a \div b$
≤	Unstrict inequality less-than sign	1670	$a \leq b$
≥	Unstrict inequality greater-than sign	1670	$a \geq b$
d	Differential sign	1675	$m = \frac{d y}{d x}$
∫	Integral sign	1675	$\int_{1}^{8} f (x) \cdot d x$
:	Colon for division	1684	$a : b$
·	Middle dot for multiplication	1698	$a \cdot b$
⁄	Division slash	1718	$a / b$
≠	Inequality sign	unknown	$a \neq = b$
x'	Prime symbol for derivative	1748	$x^{'}$
Σ	Summation symbol	1755	$i = 0 \sum 10 i$
∝	Proportionality sign	1768	$\frac{x}{y} α \frac{a}{b}$
∂	Partial differential sign	1770
≡	Identity sign	1801	$a \equiv b$
[x]	Integral part (aka floor)	1808	$[x]$
!	Factorial	1808	$n!$
Π	Product symbol	1812	$x = 2 \prod 4 (x + 1)$
⊂	Set subset of	1817	$a \subset b$
⊃	Set superset of	1817	$a \supset b$
\|...\|	Absolute value notation	1841	$∣ x ∣$
‖...‖	Matrix notation	1843	$∥ x ∥$
∩	Intersection	1888	$a \cap b$
∪	Union	1888	$a \cup b$
∈	Membership sign	1894	$a \in b$
{...}	Curly brackets for set notation	1895	${x, y, z}$
∃	Existential quantifier (there exists)	1897	$(\exists x) f (x)$
·	Dot product	1902	$a \cdot b$
×	Cross product	1902	$a \times b$
∨	Logical disjunction (aka OR)	1906	$a \lor b$
(...)	Matrix round bracket notation	1909	$(a x b y c z)$
[...]	Matrix square bracket notation	1909	$[a x b y c z]$
∀	Universal quantifier (for all)	1935	$(\forall x) f (x)$
∅	Empty set sign	1939	$\emptyset$
⌊x⌋	Greatest integer ≤ x (aka floor)	1962	$⌊ x ⌋$
⌈x⌉	Smallest integer ≥ x (aka ceiling)	1962	$⌈ x ⌉$