This whole conversation could have been summarized with a single
response:
"LyX only does what LaTeX does. If you don't like the defaults for
math typesetting, See a good LaTeX/TeX book for details. Look for
info about *why* LaTeX typesets fractions the way it does."
Any good LaTeX book discu
Here are the examples.
#This file was created by Wed Nov 24 12:47:35 1999
#LyX 1.0 (C) 1995-1999 Matthias Ettrich and the LyX Team
\lyxformat 2.15
\textclass article
\language default
\inputencoding default
\fontscheme default
\graphics default
\paperfontsize default
\spacing single
\papersiz
