Labels and tags\label

\labelCommand

Labels an equation or displayed math expression so it can be referenced later with commands like \ref.

\label{eq1}
Available in
base
Kind
prefix
Allowed mode
both
Frequency
0.02% of corpus formulasrank 157 of 263
Commonality
high
Tags
invisible
Renderer support
PackageMathJaxKaTeXXeTeX
baseMathJax: FullKaTeX: NoneXeTeX: Full
About the test scope

Syntax#

\labelm:N{\cs}control sequence

Argspec m:N — one mandatory argument. Reading argspecs

Examples#

\label{}
\mbox{\label{eq:x}x}

In TeXForm#

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

Test cases#

base
InputCaseMathJaxKaTeXXeTeX
\label{a}Positive · baselinePassFailPass
\label aPositive · bare[0]PassFailPass
\label{\alpha}Negative · neg:N[0]PassFailFail
All 6 in Labels and tags