LaTeX.org

Hi there,

However,I do have a problem now.

\lcroof{#2}

I just wonder how I can change the width of the horizontal line in the "angle" symbol?

it's a bit thicker than the vertical line

%\DeclareRobustCommand{\lcroof}[1]{%
%\def\arraystretch{0}%
%\setlength\arraycolsep{ 1pt }% adjust these ...

At least the last two problems I know how to deal with, if perhaps not cleanly.
I'm no TeX expert, so there might have been a better way--it necessitates making
the superscript into another argument, although this can be empty.

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath ...

http://maths.dur.ac.uk/stats/courses/AMII/lifecon.sty
If you want it in your style, then:
\documentclass[a4paper,12pt]{article}
\usepackage{amsmath}
\usepackage{ifthen}
\usepackage{lifecon}

\newcommand\annu[3][]{
\newdimen\annutempA\setbox0=\hbox{\ensuremath{_{\scriptstyle{\left[#1\right ...

1. \documentclass[a4paper,12pt]{article}
2. \usepackage{amsmath}
3.

4. \newcommand\annu[2][]{\ensuremath{_{%
5. \def\arraystretch{0}%
6. \setlength\arraycolsep{1pt}% adjust these
7. \setlength\arrayrulewidth{.2pt}% two settings
8. \scriptstyle{#1} \begin{array}{@{}c|}\hline
9 ...