ScalingStacks

Theorem 3.21 . [04B4]

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Theorem 3.21.

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

θ^1=arg∫L1Ω>θ^2=arg∫L2Ω.\hat{\theta}_{1}=\arg\int_{L_{1}}\Omega>\hat{\theta}_{2}=\arg\int_{L_{2}}\Omega.

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

supLθL≥θ^1,infLθL≤θ^2,\sup_{L}\theta_{L}\geq\hat{\theta}_{1},\quad\inf_{L}\theta_{L}\leq\hat{\theta}_{2}, (31)

and morever the J-volume of LL (cf. section 2.9) has a nontrivial lower bound

VolJ​(L)=∫Le−i​θ​Ω≥|∫L1Ω|+|∫L2Ω|.\text{Vol}_{J}(L)=\int_{L}e^{-i\theta}\Omega\geq|\int_{L_{1}}\Omega|+|\int_{L_{2}}\Omega|. (32)

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