Mathematics

Inline and display formulas, containers for formula attributes, macros and colored LaTeX.

Open in the guide ↗

Inline math shares the baseline: $\int_0^1 x^2\,dx = \tfrac13$.

$$
\sum_{k=0}^{n} \binom{n}{k} = 2^n
$$

::: {.element #pythagoras x=0.6 y=-0.4 font_size=34 step=2}
$$ \textcolor{Orange}{a}^2 + {\color{Cerulean} b^2} = c^2 $$
:::

Macros from deck.json: $\N \subset \R$.

• Inline math uses single dollars and is laid out on the text baseline, wrapping with the paragraph. A literal dollar is \$.
• Display math uses $$ on its own lines, or $$ … $$ on one line, and is one element. To give it attributes (position, size, step), wrap it in a ::: {.element …} container.
• Formulas render through MathJax with the ams, newcommand and configmacros packages. macros in deck.json defines commands for the whole deck:

"macros": { "N": "\\mathbb{N}", "R": "\\mathbb{R}" }

• \textcolor{…}{…} and {\color{…} …} accept dvipsnames (Orange, Cerulean, OliveGreen, …) and CSS colors.
• A formula's font_size is calibrated to the prose size: $x$ in a 28-point paragraph has the same em as the surrounding words, as in a LaTeX document.
• width= limits a formula's width (it is scaled down to fit), height= scales it, font_size= sets the base size, anchor=top-left positions a tall aligned formula by its top edge instead of its baseline.

Note Math glyphs are vector shapes, so formulas work with every animation and effect, including write, transform and circumscribe.