ag-gipp/GoUldI

<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mi>φ</mi><mo stretchy="false">(</mo><msub><mi>λ</mi> <mn>1</mn></msub><msub><mi>x</mi> <mn>1</mn></msub><mo>+</mo><msub><mi>λ</mi> <mn>2</mn></msub><msub><mi>x</mi> <mn>2</mn></msub><mo>+</mo><mi>⋯</mi><mo>+</mo><msub><mi>λ</mi> <mi>n</mi></msub><msub><mi>x</mi> <mi>n</mi></msub><mo stretchy="false">)</mo><mo>≤</mo><msub><mi>λ</mi> <mn>1</mn></msub><mi>φ</mi><mo stretchy="false">(</mo><msub><mi>x</mi> <mn>1</mn></msub><mo stretchy="false">)</mo><mo>+</mo><msub><mi>λ</mi> <mn>2</mn></msub><mspace width="thinmathspace"/><mi>φ</mi><mo stretchy="false">(</mo><msub><mi>x</mi> <mn>2</mn></msub><mo stretchy="false">)</mo><mo>+</mo><mi>⋯</mi><mo>+</mo><msub><mi>λ</mi> <mi>n</mi></msub><mi>φ</mi><mo stretchy="false">(</mo><msub><mi>x</mi> <mi>n</mi></msub><mo stretchy="false">)</mo></mrow><annotation encoding='application/x-tex'>\varphi(\lambda_1 x_1+\lambda_2 x_2+\cdots+\lambda_n x_n)\leq \lambda_1 \varphi(x_1)+\lambda_2\,\varphi(x_2)+\cdots+\lambda_n \varphi(x_n)</annotation></semantics></math>