ag-gipp/GoUldI

<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>A</mi><mi>N</mi></msub><mfenced close=")" open="("><mi>α</mi><mi>β</mi></mfenced><mo>=</mo><mfrac><mn>1</mn><mi>N</mi></mfrac><mi mathvariant="double-struck">E</mi><mi>ln</mi><msub><mo>∑</mo><mi>σ</mi></msub><mi>exp</mi><mfenced close=")" open="("><mrow><mo>-</mo><mi>β</mi><msub><mi>H</mi><mi>N</mi></msub><mfenced close=")" open="("><mi>σ</mi></mfenced></mrow></mfenced></math>