OAI/MathematicalPhysics/DefocusingNLS/Spectrum/SpectralForbiddenMomentum.lean

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On a ball where both scalar frequencies are nonpositive, regularity at the origin and defocusing give nonnegative boundary momentum.

  1. theorem OAI.DefocusingNLS.spectralPhysicalLiouvillePair_momentum_nonneg line 12