ScalingStacks

Lemma 3.7 . [03H0]

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Lemma 3.7.

There exists a triple of 11-forms 𝐚\bm{a} with ∂z⌟​𝐚=0\partial_{z}\,\lrcorner\,\bm{a}=0 such that

(3.33) Φ∗​𝝎T​Y−𝝎𝒞=d​𝒂\displaystyle\Phi^{*}\bm{\omega}_{TY}-\bm{\omega}_{\mathcal{C}}=d\bm{a}

and such that for all k≥0k\geq 0 and all ϵ>0\epsilon>0,

(3.34) |∇g𝒞k𝒂|g𝒞=O⁡(e−(δ¯−ϵ)​z).\displaystyle|\nabla^{k}_{g_{\mathcal{C}}}\bm{a}|_{g_{\mathcal{C}}}=O(e^{-(\underline{\delta}-\epsilon)z}).

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