OAI/MathematicalPhysics/DefocusingNLS/Spectrum/SpectralWKBSquareRoot.lean

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4 declarations, 0 contain sorry, 0 declared as axioms

A continuously chosen square root on the positive-real-part region, with its derivative in the rational form needed by the WKB residual.

  1. theorem OAI.DefocusingNLS.spectralComplexSqrt_sq line 12
  2. theorem OAI.DefocusingNLS.spectralComplexSqrt_ne_zero line 15
  3. theorem OAI.DefocusingNLS.spectralComplexSqrt_hasDerivAt line 21
  4. theorem OAI.DefocusingNLS.spectralComplexSqrt_norm_sq line 39