Display:

$\forall x\colon x-x=0$

Source:

<apply>
     <forall/>
     <bvar>
          <ci> x </ci>
     </bvar>
     <apply>
          <eq/>
          <apply>
               <minus/>
               <ci> x </ci>
               <ci> x </ci>
          </apply>
          <cn>0</cn>
     </apply>
</apply>