data/mathematical/73.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mo stretchy="false">{</mo><mi>C</mi><mo>:</mo><msub><mi>K</mi> <mi>X</mi></msub><mo>⋅</mo><mi>C</mi><mo>=</mo><mn>0</mn><mo stretchy="false">}</mo></mrow><annotation encoding='application/x-tex'>\{C : K_X \cdot C = 0\}</annotation></semantics></math>