Myne
Markdown Math

Math

Updated June 11, 2026

How to write inline and block mathematical expressions in your notes and how Myne renders them.

Myne renders mathematical notation with KaTeX. You write LaTeX between dollar-sign delimiters, and Myne typesets it, either inline within a sentence or as a centered block.

A note showing a rendered block equation set with KaTeX.

Inline and block math

  • Inline: wrap an expression in single dollar signs. $E = mc^2$ renders within the line.
  • Block: wrap it in double dollar signs on their own. $$ \int_0^1 x^2 \, dx $$ renders centered on its own line. Block math can use LaTeX environments such as \begin{aligned} … \end{aligned}.

Myne recognizes $ and $$ only; the \(…\) and \[…\] delimiters are not used.

Dollar signs and currency

So that ordinary prices don’t turn into math, Myne is careful about when a $ starts an expression:

  • The opening $ must not be followed by a space or a digit, so $5 and $ 100 stay as text (currency), but $x$ is math.
  • The closing $ must not be preceded by a space.
  • A $…$ expression does not cross a line break.
  • Dollar signs inside code (inline or fenced) are never treated as math.

This means a line like It cost $5, not $10. renders as plain text, while $a + b$ renders as math.

When the LaTeX is invalid

If an expression can’t be parsed, Myne shows your raw LaTeX with a subtle hint rather than a red error box. Your text is never replaced with an error, so you can see and fix it in place.

Limits

KaTeX is loaded the first time a note needs it, so the very first math on screen may appear a moment after the rest of the note. Rendering is local; nothing about your equations leaves your device.