ScalingStacks

Lemma 2.19 . [040T]

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Lemma 2.19.

In the situation of Lemma 2.18,

‖Δg(2)​Δa−1​f−f‖Cδ−1,τk,α​(ℂ3)≤C.\left\lVert\Delta_{g^{(2)}}\Delta_{a}^{-1}f-f\right\rVert_{C^{k,\alpha}_{\delta-1,\tau}(\mathbb{C}^{3})}\leq C.

In particular for a large enough constant C2C_{2},

‖Δg(2)Δa−1f−f‖Ck,αδ,τ(ℂ3∩{dist(⋅,𝔇)>C2/2})≤CC2‖f‖Cδ,τk,α​(ℂ3)≪‖f‖Cδ,τk,α​(ℂ3).\left\lVert\Delta_{g^{(2)}}\Delta_{a}^{-1}f-f\right\rVert_{C^{k,\alpha}_{\delta,\tau}(\mathbb{C}^{3}\cap\{\text{dist}(\cdot,\mathfrak{D})>C_{2}/2\})}\leq\frac{C}{C_{2}}\left\lVert f\right\rVert_{C^{k,\alpha}_{\delta,\tau}(\mathbb{C}^{3})}\ll\left\lVert f\right\rVert_{C^{k,\alpha}_{\delta,\tau}(\mathbb{C}^{3})}.

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