ScalingStacks

Proposition 2.36 . [02JK]

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Proposition 2.36.

Let φ:X′→X\varphi\colon X^{\prime}\to X be a morphism of proper varieties over KK, Y′Y^{\prime} a dd-dimensional cycle of X′X^{\prime}, and L¯i=(Li,∥⋅∥i){\overline{L}}_{i}=(L_{i},\|\cdot\|_{i}), i=0,…,d−1i=0,\dots,d-1, a collection of integrable metrized line bundles on XX. Then

φ∗​(c1⁡(φ∗​L¯0)∧⋯∧c1⁡(φ∗​L¯d−1)∧δY′)=c1⁡(L¯0)∧⋯∧c1⁡(L¯d−1)∧δφ∗​Y.\varphi_{\ast}\left(\operatorname{c}_{1}(\varphi^{\ast}{\overline{L}}_{0})\land\dots\land\operatorname{c}_{1}(\varphi^{\ast}{\overline{L}}_{d-1})\land\delta_{{Y^{\prime}}}\right)=\operatorname{c}_{1}({\overline{L}}_{0})\land\dots\land\operatorname{c}_{1}({\overline{L}}_{d-1})\land\delta_{\varphi_{*}Y}.

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