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LeanPool.NavierStokesAndEuler.Euler.SobolevPathLimits

Genuine norm, trace, and divergence constraints persist under actual uniform Sobolev limits.

@[instance_reducible]

The inherited normed group on the actual Sobolev path values.

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    @[instance_reducible]
    noncomputable def EulerSobolevPathLimits.pathLimitSpace (period : ) [Fact (0 < period)] (q : ) :

    The inherited real normed space on the actual Sobolev path values.

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      Actual Sobolev restriction is contractive for the uniform time-path norm.

      theorem EulerSobolevPathLimits.limit_norm_bound (period : ) [Fact (0 < period)] {q : } (T R : ) (u : C((Set.Icc 0 T), (EulerCylinderSobolevSpace.SobolevSpace period q))) (v : C((Set.Icc 0 T), (EulerCylinderSobolevSpace.SobolevSpace period q))) (h : Filter.Tendsto u Filter.atTop (nhds v)) (hu : ∀ (n : ), u n R) :

      Uniform state bounds persist at the actual strong Sobolev limit.

      theorem EulerSobolevPathLimits.limit_zero_trace (period : ) [Fact (0 < period)] {q : } (T : ) (t : (Set.Icc 0 T)) (u : C((Set.Icc 0 T), (EulerCylinderSobolevSpace.SobolevSpace period q))) (v : C((Set.Icc 0 T), (EulerCylinderSobolevSpace.SobolevSpace period q))) (h : Filter.Tendsto u Filter.atTop (nhds v)) (hu : ∀ (n : ), (u n) t = 0) :
      v t = 0

      A fixed zero trace is preserved by actual uniform Sobolev convergence.

      The genuine lifted divergence constraint is closed under actual uniform Sobolev convergence.