TeX notation filter functions and symbols
- 16 Feb 2022
- 1 minute to read
TeX notation filter functions and symbols
- Updated on 16 Feb 2022
- 1 minute to read
Article Summary
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TeX notation allows you to represent mathematical symbols using the TeX notation or MathJax filters in Totara.
Using TeX notation
Below are some of the basic functions you may wish to use when entering equations.
| Notation | Function | Notes | Example |
|---|---|---|---|
$$ | Using $$ at the start and end of an equation will identify a TeX sequence that will appear centred on its own line. | You can add backslashes (\) to add spaces (see example). | $$ 4\ \times \ 4 \ = \ 16 $$
|
\[ | With LaTeX you can use \[ to open and \] to close a sequence that will appear centred on its own line. | This is better at checking for errors than just using $$. | \[ 4\ \times \ 4 \ = \ 16 \]
|
\( | With LaTeX you can use \( to open and \) to close a sequence that will appear inline with text. | - | A simple equation could be, \( 4\ \times \ 4 \ = \ 16 \) for example.
|
^ | Using a caret allows you to insert a superscript character. | - | \[ 6^2 \times \ 7^4 \ = \ 336 \]
|
_ | An underscore allows you to insert a subscript character. | - | \[ 5x_3 \times \ 3x_2 \]
|
\sqrt{number} | You can insert square root notation using the sequence \sqrt{number}. | - | \[ \sqrt{36}\]
|
\frac{numerator}{denominator} | You can represent a fraction using \frac{numerator}{denominator}. | - | \[ \frac{5}{10} \times \frac{7}{9}\]
|
{ | Curly brackets can also be used to nest other functions within an equation. | - | \[ \frac{4^{3}}{20} \]
|
\ldots | Ellipses can be entered using \ldots. | - | \[ x_1, x_2,\ldots \ x_5 \]
|
Symbols
| Notation | Symbol | Notation | Symbol |
|---|---|---|---|
\amalg |
| \oplus |
|
\ast |
| \oslash |
|
\bigcirc |
| \otimes |
|
\bigtriangledown |
| \pm |
|
\bigtriangleup |
| \ominus |
|
\circ |
| \vee |
|
\leq |
| \equiv |
|
\succ |
| \perp |
|
\succeq |
| \mid | | |
\gg |
| \parallel |
|
\supset |
| \supseteq |
|
\neq |
| \notin |
|
\vdash |
| \bullet |
|
\cup |
| \times |
|
\dagger |
| \triangleleft |
|
\ddagger |
| \triangleright |
|
\diamond |
| \odot |
|
\div |
| \wr |
|
\wedge |
| \sqcup |
|
\geq |
| \prec |
|
\sim |
| \preceq |
|
\simeq |
| \ll |
|
\asymp |
| \subset |
|
\subseteq |
| \approx |
|
\ni |
| \in |
|
\dashv |
| \cdot |
|
Arrows
| Notation | Arrow | Notation | Arrow |
|---|---|---|---|
\leftarrow |
| \leftrightarrow |
|
\longleftarrow |
| \longleftrightarrow |
|
\Leftarrow |
| \updownarrow |
|
\Longleftarrow |
| \Updownarrow |
|
\rightarrow |
| \Leftrightarrow |
|
\longrightarrow |
| \Longleftrightarrow |
|
\Rightarrow |
| \leftrightharpoons |
|
\Longrightarrow |
| \Im |
|
\uparrow |
| \nearrow |
|
\Uparrow |
| \nwarrow |
|
\downarrow |
| \swarrow |
|
\Downarrow |
| \searrow |
|
Constructs and delimiters
| Notation | Delimiter/construct | Notation | Delimiter/construct |
|---|---|---|---|
\{x |
| \widehat{ab} |
|
\} |
| \$ |
|
\rangle |
| \overline{ab} |
|
\langle |
| \underline{ab} |
|
\angle |
| \therefore |
|
\= |
| \ddots |
|
\sqrt{ab} |
| \% |
|
\sqrt[n]{ab} |
| \# |
|
\frac{ab}{cd} |
| \vdots |
|
\backslash |
| \emptyset |
|
Greek letters
It is currently not possible to render the capital letters for Alpha, Beta, Zeta, Eta, Tau, Chi, Mu, Iota, Kappa, or Epsilon. However, these can be rendered using \mathrm{ }. For example, to render a capital Alpha you would enter \mathrm{A}, which would render: 
Therefore you can still render characters that look like the capital letters: 
.
| Notation | Greek letter | Notation | Greek letter |
|---|---|---|---|
\alpha |
| /omicron |
|
\beta |
| \pi |
|
\gamma |
| \Pi |
|
\Gamma |
| \rho |
|
\delta |
| \varrho |
|
\Delta |
| \sigma |
|
\epsilon |
| \Sigma |
|
\zeta |
| \varsigma |
|
\eta |
| \tau |
|
\theta |
| \upsilon |
|
\Theta |
| \Upsilon |
|
\vartheta |
| \phi |
|
\iota |
| \Phi |
|
\kappa |
| \varphi |
|
\lambda |
| \chi |
|
\Lambda |
| \psi |
|
\mu |
| \Psi |
|
\xi |
| \omega |
|
\Xi |
| \Omega |
|
Font
| Font | Notation | Example |
|---|---|---|
Calligraphic | $$ \mathcal{ }$$ | $$ \mathcal{Calligraphic: ABCDEFGHIJKLMNOPQRSTUVWXYZ}$$ is presented as: |
Blackboard (Castellar) | $$ \mathbb{ }$$ | $$ \mathbb{Blackboard: ABCDEFGHIJKLMNOPQRSTUVWXYZ}$$ is presented as: |
Fraktur (Old English style) | $$ \mathfrak{ }$$ | $$ \mathfrak{Fraktur: ABCDEFGHIJKLMNOPQRSTUVWXYZ}$$ is presented as: |
Italic | $$ \mathit{ } $$ | $$ \mathit{Italic: ABCDEFGHIJKLMNOPQRSTUVWXYZ} $$ is presented as: |
Roman | $$ \mathrm{ } $$ | $$ \mathrm{Roman: ABCDEFGHIJKLMNOPQRSTUVWXYZ} $$ is presented as: |
Bold-face | $$ \mathbf{ } $$ | $$ \mathbf{Bold-faced: ABCDEFGHIJKLMNOPQRSTUVWXYZ} $$ is presented as: |
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