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 Skip Navigation LinksMath Help > Admin > LaTeX

To create a LaTeX image, go to https://nrich.maths.org/discus/messages/27/27.html and enter the command string as \[ command string ]\

Symbols in LaTeX

Symbol LaTeX Command HTML Command HTML
Result*
�ngstr�m \AA Š�
Approximately
equal to
$\approx$ ≈
Not equal to $\neq$ ≠
Percent \% % %
Plus or minus $\pm$ ± �
Times $\times$ × ï¿½
Scalar multiplied by $\cdot$ · �
Divided by $\div$ ÷ �
Less than $<$ &lt; <
Less than or equal to $\leq$ &le;
Less than or similar to $\lesssim$
Greater than $>$ &gt; >
Greater than or equal to $\geq$ &ge;
Greater than or similar to $\gtrsim$
Square root $\sqrt{...}$ &radic;
Squared $^2$ &sup2; �
Cubed $^3$ &sup3; �
Degrees $^\circ$ &deg; �
Micro- $\mu$ &micro; �
Of the order of
(similar to)
$\sim$ &sim;
Prime $'$ or $\prime$ &prime;
Double-prime $''$ (two single quote-marks) &Prime;

* As rendered in your browser.

Examples

\[\sum_{i=1}^{n}\] is generated by \[\sum_{i=1}^{n}\]

\[\sum_{i=3}^{11}x^2\] is generated by \[\sum_{i=3}^{11}x^2\]

is generated by \[\prod_{x\in(x)}\cos x^2\] -- note \cos rather than cos so LaTeX knows it's a function, and doesn't italicize it.

is generated by

\[ \lim_{x\to\infty} \int_0^{4{\pi}} \binom{n+m}{n-m} \sqrt[3]{\frac{2 + \cos x}{2 - \sin x}} dx \]
note the optional [3] to make the cube root
note: \limsup, \liminf, \sup, \inf work the same as \lim, changing only the word(s) displayed.

is generated by \[\mathbb{R\quad Q\quad Z}\] blackboard bold font for reals, rationals, integers

is generated by

\[ \left|\sum_{i=1}^n a_ib_i\right| \le \left(\sum_{i=1}^n a_i^2\right)^\frac{1}{2} \left(\sum_{i=1}^n b_i^2\right)^\frac{1}{2} \]

is generated by \[ H(x)=\left\{\begin{array}{cl} 0, & x<0 \\ 1, & x\geq 0 \end{array}\right. \]


is generated by \[I_n = \left[ x^{n-2}\frac{2}{3} \sqrt{1+x^3} - (n-2)\int x^{n-3}\cdot\frac{2}{3} \sqrt{1+x^3}\textrm{d}x \right]_0^1\]

\[ \underbrace{\overline{A}=\left(\begin{array}{ccc|c}
\ast & \ast &      &      \\
\ast & \ast & \ast &      \\
     & \ast & \ast &      \\ \hline
     &      &      & \ast \\
\end{array}\right)} \] is generated by \[ \underbrace{\overline{A}=\left(\begin{array}{ccc|c}
\ast & \ast &      & \\
\ast & \ast & \ast & \\
     & \ast & \ast & \\ \hline
     &      &      & \ast \\
\end{array}\right)} \]

Note: array argument c=center, l=left, r=right, |=vertical line

\[ \begin{array}{l}
\cdots ellipsis,\ \ddots diagonal\ \vdots vertical\ \\
(in)equalities\ =\ >\ <\ \equiv\ \approx\ \propto\ \simeq\ \sim\ \leq\ \neq\ \geq\ \gg\ \ll\ \\
Greek\ letters\ from\ \alpha\ to\ \omega \ and\ from\ \Gamma\ to\ \Omega \\
\leftarrow (single),\ \Leftarrow (double),\ \longrightarrow (longer), \uparrow, \Longleftrightarrow\, etc. \\
Set\ theoretical\ operators: \cap, \cup, \in, \notin, \subset, \supset, \emptyset, \exists, \forall \\
\end{array} \] is
gen-
era-
ted
by
\[ \begin{array}{l}
\cdots ellipsis,\ \ddots diagonal\ \vdots vertical\ \\
(in)equalities\ =\ >\ <\ \equiv\ \approx\ \propto\ \simeq\ \sim\ \leq\ \neq\ \geq\ \gg\ \ll\ \\
Greek\ letters\ from\ \alpha\ to\ \omega \ and\ from\ \Gamma\ to\ \Omega \\
\leftarrow (single),\ \Leftarrow (double),\ \longrightarrow (longer), \uparrow, \Longleftrightarrow\, etc. \\
Set\ theoretical\ operators: \cap, \cup, \in, \notin, \subset, \supset, \emptyset, \exists, \forall \\
\end{array} \]
\[ 0 < |x-c| < \delta \Rightarrow |f(x) - L| < \varepsilon \] is generated by \[ 0 < |x-c| < \delta \Rightarrow |f(x) - L| < \varepsilon \]
is generated by \begin{array}{ccl}
{\tt \backslash rm}&-&{\rm Roman } \\
{\tt \backslash it}&-&{\it Italics\ } \\
{\tt \backslash bf}&-&{\bf Boldface } \\
{\tt \backslash sl}&-&{\sl Slanted } \\
{\tt \backslash sf}&-&{\sf Sans\ serif } \\
{\tt \backslash sc}&-&{\sc Small\ caps } \\
{\tt \backslash tt}&-&{\tt Typewriter } \\
\end{array}

 

Internet references

Symbols in LaTeX 

Comprehensive Tex Archive, which links to Huge number of Symbols in LaTeX (mirror site).

Comprehensive Tex Archive: The Not-too-short introduction to LaTeX 2 (mirror)

Related pages in this website

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The webmaster and author of this Math Help site is Graeme McRae.