data/mathtoweb/143.mml
<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>E</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mo>-</mo><mi>i</mi><msup><mi>k</mi><mo>′</mo></msup><mo>/</mo><mi>k</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><mo>=</mo><mrow><mo form="prefix">(</mo><mn>1</mn><mo>/</mo><mi>k</mi><mo form="postfix">)</mo></mrow><mi>E</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><msup><mi>k</mi><mo>′</mo></msup><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow></mrow></math>