ScalingStacks

Definition 6.6 . [04KA]

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Definition 6.6.

Two stitched fibrations ℱ=(X,B,f,γ,σ)\mathcal{F}=(X,B,f,\gamma,\sigma) and ℱ′=(X′,B′,f′,γ′,σ′)\mathcal{F}^{\prime}=(X^{\prime},B^{\prime},f^{\prime},\gamma^{\prime},\sigma^{\prime}), with seams ZZ and Z′Z^{\prime} respectively are symplectically conjugate if there are neighborhoods W⊆BW\subseteq B of Γ:=f⁡(Z)\Gamma:=f(Z) and W′⊆B′W^{\prime}\subseteq B^{\prime} of Γ′:=f′​(Z′)\Gamma^{\prime}:=f^{\prime}(Z^{\prime}) such that ℱ|W\mathcal{F}|_{W} and ℱ′|W′\mathcal{F}^{\prime}|_{W^{\prime}} are (ψ,ϕ)(\psi,\phi)-conjugate, where ψ\psi is an S1S^{1} equivariant C∞C^{\infty} symplectomorphism sending Z′Z^{\prime} to ZZ and ϕ\phi is a C∞C^{\infty} diffeomorphism such that ψ∘σ′=σ∘ϕ\psi\circ\sigma^{\prime}=\sigma\circ\phi and ψ∗​γ′=γ\psi_{\ast}\gamma^{\prime}=\gamma. The set of equivalence classes under this relation will be called germs of stitched fibrations.

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