symbols-a4

Table 169: Extensible Accents
›abc \widetilde{abc} ∗ ” abc \widehat{abc} ∗
←−
abc \overleftarrow{abc} † −→
†
abc \overrightarrow{abc}
abc
abc
\overline{abc}
\overbrace{abc}
abc
abc
\underline{abc}
\underbrace{abc}
√
abc ‡
\sqrt{abc}
As demonstrated in a 1997 TUGboat article about typesetting long-division problems
[Gib97], an extensible long-division sign (“ )abc ”) can be faked by putting a
“\big)” in a tabular environment with an \hline or \cline in the preceding row.
The article also presents a piece of code (uploaded to CTAN as longdiv.tex) that
automatically solves and typesets—by putting an \overline atop “\big)” and
the desired text—long-division problems. See also the polynom package, which automatically
solves and typesets polynomial-division problems in a similar manner.
∗ These symbols are made more extensible by the MnSymbol package and even more
extensible by the yhmath package.
† If you’re looking for an extensible diagonal line or arrow to be used for canceling or
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reducing mathematical subexpressions (e.g., “x + −x” or “ 3 + 2 ”) then consider
using the cancel package.
‡ With an optional argument, \sqrt typesets nth roots. For example,
“\sqrt[3]{abc}” produces “ 3√ abc ” and “\sqrt[n]{abc}” produces “ n√ abc ”.
Table 170: overrightarrow Extensible Accents
=⇒
abc \Overrightarrow{abc}
Table 171: yhmath Extensible Accents
âbc \wideparen{abc} È abc \widetriangle{abc}
˚âbc \widering{abc}
Table 172: AMS Extensible Accents
←→
abc \overleftrightarrow{abc} abc
←→
\underleftrightarrow{abc}
abc
←−
\underleftarrow{abc} abc
−→ \underrightarrow{abc}
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