ScalingStacks

Proposition-Definition 2.18 . [019J]

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Proposition-Definition 2.18.

To any nn-tuple (θ1,…,θn)(\theta_{1},\dots,\theta_{n}) of closed (1,1)(1,1)-forms we can associated a signed atomic measure θ1∧⋯∧θn\theta_{1}\wedge\dots\wedge\theta_{n} supported on XdivX^{\mathrm{div}} such that

(2.2) ∫Xf​θ1∧⋯∧θn=∑i∈Ibi​f​(xi)​(θ1,𝒳|Ei⋅…⋅θn,𝒳|Ei)\int_{X}f\,\theta_{1}\wedge\dots\wedge\theta_{n}=\sum_{i\in I}b_{i}f(x_{i})\,(\theta_{1,\mathcal{X}}|_{E_{i}}\cdot\ldots\cdot\theta_{n,\mathcal{X}}|_{E_{i}})

for any common determination 𝒳\mathcal{X} of the forms θi\theta_{i}, and for any model function ff. Here we have written the special fiber as 𝒳0=∑i∈Ibi​Ei\mathcal{X}_{0}=\sum_{i\in I}b_{i}E_{i} and xi=xEix_{i}=x_{E_{i}} is the divisorial point associated to EiE_{i}.

Further, (θ1,…,θn)↦θ1∧⋯∧θn(\theta_{1},\dots,\theta_{n})\mapsto\theta_{1}\wedge\dots\wedge\theta_{n} is multilinear and symmetric.

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