ag-gipp/GoUldI

<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><msub><mo>∫</mo> <mrow><msup><mi>ℝ</mi> <mi>n</mi></msup></mrow></msub><mi>f</mi><mspace width="thinmathspace"/><mi>d</mi><mi>x</mi><mo>=</mo><msubsup><mo>∫</mo> <mn>0</mn> <mn>∞</mn></msubsup><mrow><mo>{</mo><msub><mo>∫</mo> <mrow><mo>∂</mo><mi>B</mi><mo stretchy="false">(</mo><msub><mi>x</mi> <mn>0</mn></msub><mo>;</mo><mi>r</mi><mo stretchy="false">)</mo></mrow></msub><mi>f</mi><mspace width="thinmathspace"/><mi>d</mi><mi>S</mi><mo>}</mo></mrow><mspace width="thinmathspace"/><mi>d</mi><mi>r</mi></mrow><annotation encoding='application/x-tex'>\int_{\mathbb{R}^n}f\,dx = \int_0^\infty\left\{\int_{\partial B(x_0;r)} f\,dS\right\}\,dr</annotation></semantics></math>