I am not able to get the Algebra notation to display correctly. The two images below show the screen while editing the text and how it displays.
Input/Editing Screen
Output/Display screen
and you would like folk to guess at your set-up because you think it will be fun for us? maybe you could go ask Drew to provide some details?
Craig, the reason it is displayed this way is that Algebra filter doesn't actually display those math exressions. It just lets you to use simple syntax, which is then transformed into TeX syntax, which you see in result.
To make it look like actual math expression, please turn TeX filter on (which is done at same place as for Algebra filter).