Writing latex requires alot of \{}[]'s, its good that you have included a toolbar however, it stays under the keyboard while typing (android 2.2 with galaxy tab). If it is possible, it might be better to have a custom keyboard, this will support horizontal typing (where there is only the textbox) as well. Including common commands in the toolbar will also be nice.
Recommendation
Writing latex requires alot of \{}[]'s, its good that you have included a toolbar however, it stays under the keyboard while typing (android 2.2 with galaxy tab). If it is possible, it might be better to have a custom keyboard, this will support horizontal typing (where there is only the textbox) as well. Including common commands in the toolbar will also be nice.