ScalingStacks

Definition 3.107 . [02P1]

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Definition 3.107.

Let f1,…,fnf_{1},\dots,f_{n} be concave functions on NℝN_{\mathbb{R}}. The mixed Monge-Ampère measure is defined by the formula

ℳM​(f1,…,fn)=1n!​∑j=1n(−1)n−j​∑1≤i1<⋯<ij≤nℳM​(fi1+⋯+fij).{\mathcal{M}}_{M}(f_{1},\dots,f_{n})=\frac{1}{n!}\sum_{j=1}^{n}(-1)^{n-j}\sum_{1\leq i_{1}<\cdots<i_{j}\leq n}{\mathcal{M}}_{M}(f_{i_{1}}+\dots+f_{i_{j}}).

It is a measure on NℝN_{\mathbb{R}}.

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