><span class="mord coloredeq equ" style=""><span class="mord mathnormal" style="margin-right:0.02778em">D</span></span><span class="mord"><span class="delimsizing size2">(</span></span><span class="mord"><span class="mord coloredeq eqn" style=""><span class="mord" style=""><span class="mord vbox" style=""><span class="thinbox" style=""><span class="rlap" style=""><span class="strut" style="height:0.43056em;vertical-align:0em;"></span><span class="inner"><span class="mord" style=""><span class="mord mathnorm