[texhax] Under-Sized Angle Brackets

Mc Kiernan, Daniel Kian, Mc-Kiernan at att.net
Wed Sep 2 23:12:40 CEST 2009

Lars Madsen wrote:

> Mc Kiernan, Daniel Kian, wrote:
>> I'm attempting to produce formulae some of which have large angle
>> brackets as delimiters.  Some of these should be, say, 9 lines tall.
>> But, when pdfeTeX renders them, none are a full three lines tall.
>> Other delimiters (parentheses, brackets, and braces), large and
>> small, are rendering fine.
>> I'm using packages graphicx, latexsym, amsmath, amssymb.
> > 
>> Thanks in advance for whatever help might be offered.
> minimal example please

Here's the first formula for which there is a problem:

\left\langle \begin{matrix}\overline{{B_{1}\;\subseteq\; C\left(B_{1}\;\cup\; B_{2}\;\cup\; B_{3}\right)}}\;\forall B_{3}\\
\left\{ \begin{matrix}\left[B_{1}\;\subseteq\; C\left(B_{1}\;\cup\; B_{2}\;\cup\; B_{4}\right)\right]\\
\overline{{B_{2}\;\subseteq\; C\left(B_{1}\;\cup\; B_{2}\;\cup\; B_{4}\right)}}\end{matrix}\right\} \forall B_{4}\end{matrix}\right\rangle \forall\left(B_{1},B_{2}\right)

> some fonts provide building blocks for creating large delimiters, but 
> since \lvert and \rvert are sloped, that cannot be present in the font, 
> so pdflatex may be right in refusing to go that large.
> I would refrase this equation, as a 9-lined equation is already very 
> hard to read.

These formulae aren't generally equations, and restating them to reduce the number of lines would generally be impracticable (given other constraints) or in fact reduce their readabilitiy.

> Otherwise draw the delimiter using, say tikz

I cannot tell the publisher to install further software.  If I cannot get taller angle brackets from pdflatex, then I will need to fall back to using fewer distinct delimiters (which will make it harder for the reader to parse the formulae).

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