data/mathtoweb/176.mml
<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msubsup><mi>S</mi><mi>p</mi><mi>m</mi></msubsup><mrow><mo form="prefix">(</mo><mi>x</mi><mo>,</mo><mi>ξ</mi><mo form="postfix">)</mo></mrow><mo>→</mo><mi>sin</mi><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mi>m</mi><mi>x</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow></mrow></math>