ScalingStacks

Proof. [02VU]

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Proof.

For short, denote μ=(valK)∗​(c1​(L¯)n∧δXΣ)\mu=({\operatorname{val}}_{K})_{\ast}(c_{1}(\overline{L})^{n}\land\delta_{X_{\Sigma}}). Let ∥⋅∥l\|\cdot\|_{l} be a sequence of semipositive smooth (respectively algebraic) metrics converging to ∥⋅∥\|\cdot\|. By Proposition 2.33, the measures c1(L,∥⋅∥l)n∧δXΣc_{1}(L,\|\cdot\|_{l})^{n}\land\delta_{X_{\Sigma}} converge to c1​(L¯)n∧δXΣc_{1}({\overline{L}})^{n}\land\delta_{X_{\Sigma}}. Therefore, the measures (valK)∗(c1(L,∥⋅∥l)n∧δXΣ)({\operatorname{val}}_{K})_{\ast}(c_{1}(L,\|\cdot\|_{l})^{n}\land\delta_{X_{\Sigma}}) converge to the measure μ\mu on NΣN_{\Sigma}. Proposition 2.37 implies that the measure of XΣan∖X0anX_{\Sigma}^{{\text{\rm an}}}\setminus X_{0}^{{\text{\rm an}}} with respect to c1​(L¯)n∧δXΣc_{1}({\overline{L}})^{n}\land\delta_{X_{\Sigma}} is zero. Therefore NΣ∖NℝN_{\Sigma}\setminus N_{\mathbb{R}} has μ\mu-measure zero. Denote ψl=ψ(∥⋅∥l)𝕊\psi_{l}=\psi_{(\|\cdot\|_{l})_{\mathbb{S}}}. By Proposition 3.108, the measures ℳM​(ψl)\mathcal{M}_{M}(\psi_{l}) converge to the measure ℳM​(ψ)\mathcal{M}_{M}(\psi). Thus μ|Nℝ=n!​ℳM​(ψ)\mu|_{N_{\mathbb{R}}}=n!\mathcal{M}_{M}(\psi). If we add to this that the measure of NΣ∖NℝN_{\Sigma}\setminus N_{\mathbb{R}} is zero, we deduce equation (5.82). The last statement of the theorem is clear from Theorem 5.33 and Theorem 5.70. ∎

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