As I (and from the replies, others) have been having
difficulties with this, I thought I'd post a little HOWTO
to the list.
First, the LaTeX convention:
\bf in mathmode only works with digits, latin letters and
Greek UPPERCASE. All others, Greek lowercase and
math-symbols appear in the math standard mode, which is
unbold italic!
The description below will allow you to output bold
lowercase Greek letters and math symbols without messing up
the typesetting. However, there is a caveat. Herbert Voss
<[EMAIL PROTECTED]> who created the "fix" below also notes:
\boldmath doesn't work with indexes and exponents, the
characters +:;!?()[] all math symbols, which appear in two
sizes (e.g. integral, sum)
Having said that, it seems to work for me. Your milage may
vary.
Without further ado, the HOWTO.
Have fun,
Angus
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How to produce bold, lowercase Greek characters in equations
LyX itself can't display them as bold (although they will
look Ok in the equations), but the output from LaTeX
will be perfect.
A command "\bfmath" is defined twice. Once as a LyX math-macro,
to control the appearance in LyX itself and once in the LaTeX
Preamble to ensure that output is "just-so".
The LyX macro contains nothing but the input argument, perhaps
surrounded by ERT (Evil Red Text) brackets to indicate what is
inside the macro and what's not. How to create a macro is detailed
exhaustively in the User Guide, Section 5.5.1.1
To control the ouput from LaTeX put the following in the LaTeX
Preamble:
\newcommand{\bfmath}[1]{\mbox{\boldmath$#1$\unboldmath}}
\let\newcommand=\providecommand
The last command here ensures that LaTeX chooses the
Preamble version for the typesetting.
