ag-gipp/GoUldI

<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>R</mi><mi>a</mi></msub><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mi mathvariant="bold">b</mi><mo>;</mo><mi mathvariant="bold">z</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><msub><mi>R</mi><mrow><mo>-</mo><mi>a</mi></mrow></msub><mrow><mo rspace="0.3em" lspace="0em" stretchy="true" fence="true" form="prefix">(</mo><mi mathvariant="bold">b</mi><mo>;</mo><mi mathvariant="bold">z</mi><mo rspace="0em" lspace="0.3em" stretchy="true" fence="true" form="postfix">)</mo></mrow><mo>&#x0003E;</mo><mn>1</mn></mrow></math>