% Copyright 2007 TeX Users Group.
% You may freely use, modify and/or distribute this file.
\typesize=12pt

% The following wires in open face brackets instead of brackets

% \mathcode`\[="4182
% \mathcode`\]="4183

% \delcode`\[="182382
% \delcode`\]="183383

\input lucidabr.mac

\noheaders

\noindent
This is a test of nested radicals $\sqrt{5}/2$, $\sqrt{{a\over b}}$,
$\sqrt{\sqrt{\pi}}$, $\sqrt{\sqrt{{a\over b}}}$

\noindent
This is a test of (displayed) nested radicals (nesting radicals?)
%
$$\sqrt{-1} + \sqrt{\sqrt{-1}} + \sqrt{\sqrt{\sqrt{-1}}} + 
\sqrt{\sqrt{\sqrt{\sqrt{-1}}}}$$
%
This is a test of (displayed) nested radicals (nesting radicals?)
%
$$\sqrt{{a\over b}} + \sqrt{\sqrt{{a\over b}}} + \sqrt{\sqrt{\sqrt{{a\over b}}}} + 
\sqrt{\sqrt{\sqrt{\sqrt{{a\over b}}}}}$$
%
This is a test of (displayed) nested radicals (nesting radicals?)
%
$$\sqrt{{{a\over b} + x\over x + {c\over d}}} + 
\sqrt{\sqrt{{{a\over b} + x\over x + {c\over d}}}} + 
\sqrt{\sqrt{\sqrt{{{a\over b} + x\over x + {c\over d}}}}} + 
\sqrt{\sqrt{\sqrt{\sqrt{{{a\over b} + x\over x + {c\over d}}}}}}$$
%
That was a test of (displayed) nested radicals (nesting radicals?)

% This is a test of displayed nested integral signs.

% $$\int \eta^2\,d\eta +
% \int \sqrt{\int \eta^2\,d\eta} +
% \int \sqrt{\int \sqrt{\int \eta^2\,d\eta}} +
% \int \sqrt{{\int \sqrt{\int \eta^2\,d\eta}}}$$

% This is a test of displayed nested integral signs.

\noindent
This is a test of nested brackets
$$[a b c] + 
\bigl[[a b c] + [a b c]\bigr] +
\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + [a b c]\bigr]\Bigr]$$
% $$\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + 
% [a b c]\bigr]\Bigr]\biggr] +
% \Biggl[\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + 
% \bigl[[a b c] + [a b c]\bigr]\Bigr]\biggr]\Biggr]$$
$$\left[\sqrt{\left[\sqrt{
\Biggl[\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + [a b c]\bigr]\Bigr]\biggr]\Biggr]}\right]}\right]$$
That was a test of nested brackets

\mathcode`\[="4182
\mathcode`\]="4183
\delcode`\[="182382
\delcode`\]="183383

\noindent
This is a test of nested open face brackets
$$[a b c] + 
\bigl[[a b c] + [a b c]\bigr] +
\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + [a b c]\bigr]\Bigr]$$
% $$\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + 
% [a b c]\bigr]\Bigr]\biggr] +
% \Biggl[\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + 
% \bigl[[a b c] + [a b c]\bigr]\Bigr]\biggr]\Biggr]$$
$$\left[\sqrt{\left[\sqrt{
\Biggl[\biggl[\Bigl[\bigl[[a b c] + [a b c]\bigr] + \bigl[[a b c] + [a b c]\bigr]\Bigr]\biggr]\Biggr]}\right]}\right]$$
That was a test of nested open face brackets

\end