ag-gipp/GoUldI

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data/mathtoweb/153.mml

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<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>&#x003C8;</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mfrac linethickness="1"><mrow><mi>z</mi><mo>+</mo><mn>1</mn></mrow><mn>2</mn></mfrac><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><mo>-</mo><mi>&#x003C8;</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mfrac linethickness="1"><mi>z</mi><mn>2</mn></mfrac><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><mo>=</mo><mn>2</mn><mstyle displaystyle="true"><munderover><mo>&#x02211;</mo><mrow><mi>k</mi><mo>=</mo><mn>0</mn></mrow><mo>&#x0221E;</mo></munderover></mstyle><mfrac linethickness="1"><mrow><msup><mrow><mo form="prefix">(</mo><mo>-</mo><mn>1</mn><mo form="postfix">)</mo></mrow><mi>k</mi></msup></mrow><mrow><mi>k</mi><mo>+</mo><mi>z</mi></mrow></mfrac></mrow></math>