\boldsymbol - LaTeX bold symbol command

\boldsymbol x

Renderer support

Package	MathJax	KaTeX	XeTeX
`boldsymbol`	MathJax: Full	KaTeX: Full	XeTeX: Full

Syntax#

\boldsymbolm{a}math content

Argspec m — one mandatory argument. Reading argspecs

\mathbf does not bold Greek; use \boldsymbol (or unicode-math \symbf).

\boldsymbol{\alpha}

\boldsymbol{x} \times \boldsymbol{y}

A \boldsymbol{\cdot} B

\boldsymbol{x+y}

TeXForm parses this entry as prefix syntax; the package determines its argument specification.

\bm{#1}exact
Requires the bm package in standard LaTeX; typically preferred over \\boldsymbol.
\mathbf{#1}approximate
Applies bold Roman font, which does not bold Greek letters by default and overrides the original font family.

`boldsymbol`
Input	Case	MathJax	KaTeX	XeTeX
`\boldsymbol{a}`	Positive · baseline	Pass	Pass	Pass
`\boldsymbol a`	Positive · bare[0]	Pass	Pass	Pass