InkCop integrates the KaTeX math engine. The examples below use a source + rendered result format. You can copy the content from the source blocks directly into your document, and MarkdownRenderer will recognize and render the formulas automatically.

Tip: Use $...$ and $$...$$ directly. Code blocks are only for showing the raw source, not for placing formulas inside them.

Inline Formulas

Source

Inline formulas in text should be wrapped with `$`.

For example, `$E = mc^2$` renders as an inline formula.

Rendered Result

Inline formulas in text should be wrapped with $.

For example, $E = mc^2$ renders as an inline formula: $E = mc^2$.

Block Formulas

Source

Block formulas should be wrapped with `$$`.

$$
\frac{\partial u}{\partial t} = \alpha \nabla^2 u
$$

Rendered Result

Block formulas should be wrapped with $$.

Common Examples

Summation

Source

$$\sum_{i=1}^{n} x_i = x_1 + x_2 + \cdots + x_n$$

Rendered Result

$\sum_{i=1}^{n} x_i = x_1 + x_2 + \cdots + x_n$

Integral

Source

$$\int_{0}^{\infty} e^{-x^2} dx = \frac{\sqrt{\pi}}{2}$$

Rendered Result

$\int_{0}^{\infty} e^{-x^2} dx = \frac{\sqrt{\pi}}{2}$

Statistics

Source

$$\bar{x} = \frac{1}{n}\sum_{i=1}^{n}x_i$$

$$\sigma = \sqrt{\frac{1}{N}\sum_{i=1}^{N}(x_i - \mu)^2}$$

Rendered Result

$\bar{x} = \frac{1}{n}\sum_{i=1}^{n}x_i$

$\sigma = \sqrt{\frac{1}{N}\sum_{i=1}^{N}(x_i - \mu)^2}$

Supported LaTeX Commands

InkCop’s KaTeX supports most common LaTeX math commands, including:

• Greek letters: \alpha, \beta, \gamma, \delta, \theta, \lambda, and more
• Operators: \sum, \prod, \int, \lim, \max, \min
• Relations: \leq, \geq, \neq, \approx, \equiv
• Arrows: \rightarrow, \leftarrow, \Leftrightarrow
• Fonts: \mathbb{R}, \mathcal{L}, \mathbf{x}
• Fractions: \frac{a}{b}, \dfrac{a}{b}
• Subscripts and superscripts: x^2, x_i, x_{ij}^{(k)}

Usage Tips

Formula Numbers

For formulas that need numbering or references, add a \tag{} label after the formula.

Source

$$
\mathbf{A}\mathbf{x} = \mathbf{b}\tag{1}
$$

Rendered Result

Migrating from Older Documents

If your old documents use plain text formulas with the $...$ syntax, InkCop will automatically convert them into renderable math nodes when the document is opened. For new documents, we recommend writing them using the “source + rendered result” format shown above.