ScalingStacks

Lemma 3.16 (Cancellation Lemma) . [0507]

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Lemma 3.16 (Cancellation Lemma).
Ai​α​β⋅yβ⋅d​xi∧ηα^−yα​(d​ηα+1∧ηα+2−ηα+1∧d​ηα+2)\displaystyle A_{i\alpha\beta}\cdot y_{\beta}\cdot dx_{i}\wedge\eta_{\widehat{\alpha}}-y_{\alpha}(d{\eta_{\alpha+1}}\wedge{\eta_{\alpha+2}}-{\eta_{\alpha+1}}\wedge d{\eta_{\alpha+2}})
(3.144) =\displaystyle= −Ai​j​α​β​yβ​yμ​d​yμ​α^∧d​xi∧d​xj+Π3(2)+O~​(r3).\displaystyle-A_{ij\alpha\beta}y_{\beta}y_{\mu}dy_{\widehat{\mu\alpha}}\wedge dx_{i}\wedge dx_{j}+\Pi_{3}^{(2)}+{\widetilde{O}}(r^{3}).

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