<?xml version="1.0" encoding="UTF-8"?>
<math xmlns="http://www.w3.org/1998/Math/MathML">
   <mi>F</mi>
   <mfenced close=")" open="(">
      <mn>1</mn>
      <mrow>
         <mi>a</mi>
         <mo>;</mo>
         <mi>a</mi>
         <mo>+</mo>
         <mn>1</mn>
         <mo>;</mo>
         <mo>-</mo>
         <mn>1</mn>
      </mrow>
   </mfenced>
   <mo>=</mo>
   <mrow>
      <mn>1</mn>
   </mrow>
   <mrow>
      <mn>2</mn>
   </mrow>
   <mi>a</mi>
   <mfenced close=")" open="(">
      <mrow>
         <mi>ψ</mi>
         <mfenced close=")" open="(">
            <mrow>
               <mrow>
                  <mn>1</mn>
               </mrow>
               <mrow>
                  <mn>2</mn>
               </mrow>
               <mi>a</mi>
               <mo>+</mo>
               <mrow>
                  <mn>1</mn>
               </mrow>
               <mrow>
                  <mn>2</mn>
               </mrow>
            </mrow>
         </mfenced>
         <mo>-</mo>
         <mi>ψ</mi>
         <mfenced close=")" open="(">
            <mrow>
               <mrow>
                  <mn>1</mn>
               </mrow>
               <mrow>
                  <mn>2</mn>
               </mrow>
               <mi>a</mi>
            </mrow>
         </mfenced>
      </mrow>
   </mfenced>
</math>
