data/mathtoweb/152.mml
<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>ψ</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mn>1</mn><mo>+</mo><mi>z</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><mo>=</mo><mo>-</mo><mi>γ</mi><mo>+</mo><mstyle displaystyle="true"><munderover><mo>∑</mo><mrow><mi>k</mi><mo>=</mo><mn>2</mn></mrow><mo>∞</mo></munderover></mstyle><msup><mrow><mo form="prefix">(</mo><mo>-</mo><mn>1</mn><mo form="postfix">)</mo></mrow><mi>k</mi></msup><mi>ζ</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mi>k</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><msup><mi>z</mi><mrow><mi>k</mi><mo>-</mo><mn>1</mn></mrow></msup></mrow></math>