Hello everybody! I need to produce a line of mathematical text resembling the one at
http://www.cpt.univ-mrs.fr/~mustatea/right.png . What you see was produced in LaTeX by inserting graphics in an array, a thing that apparently I cannot do with LyX. Instead, I chose to use tables and even though I choose to align my symbols "centered" and "middle", I keep obtaining lines like the one at http://www.cpt.univ-mrs.fr/~mustatea/wrong.png . Could you please help me to center the "plus" and "equal" symbols? Thank you. A. M.