# Annuity notation in LaTeX

How do you write this in LaTeX:

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Start here: How to look up a math symbol –  Alan Munn Aug 5 '11 at 20:01

I suggest to google for "actuarial" symbols and, of course, "LaTeX". You will find lots of examples, e.g. Annuity or Angle Operation Symbol in LaTeX.

I solved that problem some years ago, if I only remembered the context. . .

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+1 for the lifecon package mentioned there. –  mbork Aug 5 '11 at 23:15
@Keks: But how do you do it on sites like this? –  annuitt Aug 6 '11 at 6:56
How do you do what? On which sites? Sorry, I do not understand the question. –  Keks Dose Aug 6 '11 at 15:06

In the thread Actuarial & Annuity notation in LaTeX from text.comp.tex, Donald Arseneau provided the following \annu command:

\def\annu#1{_{%
\vbox{\hrule height .2pt
\kern 1pt
\hbox{$\scriptstyle {#1}\kern 1pt$}%
}\kern-.05pt
\vrule width .2pt
}}