Accents\widehat

\widehatCommand

Used to place a wider hat accent over grouped math content, such as Fourier transforms or estimated vectors of symbols.

\widehat{xyz}
Topic
Accents
Available in
base
Kind
prefix
Allowed mode
math
Frequency
1.66% of corpus formulasrank 35 of 263
Commonality
medium
Tags
decoration
Renderer support
PackageMathJaxKaTeXXeTeX
baseMathJax: FullKaTeX: FullXeTeX: Full
About the test scope

Syntax#

\widehatm{a}math content

Argspec m — one mandatory argument. Reading argspecs

Common tasks#

How to write a wide hat over two letters#

\widehat{AB}

How to write a Fourier-transform hat#

\widehat{f}(\xi)

How to hat a product#

Use \widehat when \hat looks too narrow.

\widehat{xy}

In TeXForm#

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

base/widehat-to-hatfrom Equivmath

Drop stretchiness from \widehat by rewriting it to \hat.

\widehat{#1} \hat{#1}

Equivalent forms#

  • \hat{#1}approximate

    For short bases this is often similar, but \widehat is intended for wider grouped content.

See also#

Test cases#

base
InputCaseMathJaxKaTeXXeTeX
\widehat{a}Positive · baselinePassPassPass
\widehat aPositive · bare[0]PassPassPass
All 45 in Accents