ag-gipp/GoUldI

<math 
  xmlns="http://www.w3.org/1998/Math/MathML" display="block" alttext="StartSet ModifyingAbove xi With right-arrow Superscript mu Baseline comma tau Superscript mu Baseline EndSet">
  <semantics>
    <mrow data-semantic-type="fenced" data-semantic-role="leftright" data-semantic-id="12" data-semantic-children="11" data-semantic-content="0,10">
      <mo fence="false" stretchy="false" data-semantic-type="fence" data-semantic-role="open" data-semantic-id="0" data-semantic-parent="12" data-semantic-operator="fenced">{</mo>
      <mrow data-semantic-type="punctuated" data-semantic-role="sequence" data-semantic-id="11" data-semantic-children="5,6,9" data-semantic-content="6" data-semantic-parent="12">
        <msup data-semantic-type="superscript" data-semantic-role="greekletter" data-semantic-id="5" data-semantic-children="3,4" data-semantic-parent="11">
          <mrow class="MJX-TeXAtom-ORD">
            <mrow class="MJX-TeXAtom-ORD">
              <mover data-semantic-type="overscore" data-semantic-role="greekletter" data-semantic-id="3" data-semantic-children="1,2" data-semantic-parent="5">
                <mi data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="italic" data-semantic-id="1" data-semantic-parent="3">ξ
                  <!-- ξ -->
                </mi>
                <mo stretchy="false" data-semantic-type="relation" data-semantic-role="overaccent" data-semantic-id="2" data-semantic-parent="3">→
                  <!-- → -->
                </mo>
              </mover>
            </mrow>
          </mrow>
          <mrow class="MJX-TeXAtom-ORD">
            <mi data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="italic" data-semantic-id="4" data-semantic-parent="5">μ
              <!-- μ -->
            </mi>
          </mrow>
        </msup>
        <mo data-semantic-type="punctuation" data-semantic-role="comma" data-semantic-id="6" data-semantic-parent="11" data-semantic-operator="punctuated">,</mo>
        <msup data-semantic-type="superscript" data-semantic-role="greekletter" data-semantic-id="9" data-semantic-children="7,8" data-semantic-parent="11">
          <mi data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="italic" data-semantic-id="7" data-semantic-parent="9">τ
            <!-- τ -->
          </mi>
          <mrow class="MJX-TeXAtom-ORD">
            <mi data-semantic-type="identifier" data-semantic-role="greekletter" data-semantic-font="italic" data-semantic-id="8" data-semantic-parent="9">μ
              <!-- μ -->
            </mi>
          </mrow>
        </msup>
      </mrow>
      <mo fence="false" stretchy="false" data-semantic-type="fence" data-semantic-role="close" data-semantic-id="10" data-semantic-parent="12" data-semantic-operator="fenced">}</mo>
    </mrow>
    <annotation encoding="application/x-tex">\{{\vec {\xi }}^{\mu },\tau ^{\mu }\}</annotation>
  </semantics>
</math>