1<math xmlns="http://www.w3.org/1998/Math/MathML" display="block"> 2 <mrow> 3 <mi>Γ</mi> 4 <mfenced> 5 <mrow> 6 <mi>a</mi> 7 <mo>,</mo> 8 <mi>z</mi> 9 </mrow> 10 </mfenced> 11 <mo>+</mo> 12 <mi>γ</mi> 13 <mfenced> 14 <mrow> 15 <mi>a</mi> 16 <mo>,</mo> 17 <mi>z</mi> 18 </mrow> 19 </mfenced> 20 <mspace width="1em"/> 21 <mo>=</mo> 22 <mspace width="1em"/> 23 <mi>Γ</mi> 24 <mfenced> 25 <mrow> 26 <mi>a</mi> 27 </mrow> 28 </mfenced> 29 </mrow> 30</math> 31 32