ScalingStacks

Theorem 3.26 . [04BD]

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Theorem 3.26.

(Floer theoretic obstruction, multiple Lagrangian case) Assume the automatic transversality and the positivity condition hold for the bordism current 𝒞\mathcal{C}. Assume the destabilizing condition

θ^1>θ^2>…>θ^N,θ^i=arg∫LiΩ.\hat{\theta}_{1}>\hat{\theta}_{2}>\ldots>\hat{\theta}_{N},\quad\hat{\theta}_{i}=\arg\int_{L_{i}}\Omega.

Then the Lagrangian phase angle of LL has a lower bound on its oscillation:

supLθL≥θ^1,infLθL≤θ^N,\sup_{L}\theta_{L}\geq\hat{\theta}_{1},\quad\inf_{L}\theta_{L}\leq\hat{\theta}_{N}, (35)

and morever the J-volume of LL has a nontrivial lower bound

VolJ​(L)=∫Le−i​θ​Ω≥∑1N|∫LiΩ|.\text{Vol}_{J}(L)=\int_{L}e^{-i\theta}\Omega\geq\sum_{1}^{N}|\int_{L_{i}}\Omega|. (36)

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