Accents\bar

\barCommand

Used to place an overbar over a symbol or grouped expression, for example for conjugates, closures, or averages.

\bar{z}

Topic: Accents
Available in: base
Kind: prefix
Allowed mode: math
Frequency: 3.98% of corpus formulasrank 15 of 263
Commonality: high
Tags: decoration

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: Full	XeTeX: Full

About the test scope

Syntax#

\barm{a}math content

Argspec m — one mandatory argument. Reading argspecs

Common tasks#

How to put a bar over a single letter#

Use \bar for one character; use \overline for a longer run.

\bar{x}

How to write a sample mean#

\bar{X}_n = \frac{1}{n}\sum_{i=1}^n X_i

How to stack a bar on a Greek letter#

\bar{\alpha}

In TeXForm#

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

See also#

\acute base
\breve base
\check base
\ddddot ams
\dddot ams
\ddot base
\dot base
\grave base
\hat base
\mathring ams
\tilde base
\vec base
\widehat base
\widetilde base

Test cases#

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

All 45 in Accents

Topic: Accents
Available in: base
Kind: prefix
Allowed mode: math
Frequency: 3.98% of corpus formulasrank 15 of 263
Commonality: high
Tags: decoration

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: Full	XeTeX: Full

About the test scope

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