`BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le` (hκ : 0 ≤ κ) (x : maxDom (oscSymbol κ)) : (∑' n, (ampSeq κ ((x : L2I ℕ) : ℕ → ℂ) n) ^ 2) ≤ (1 / 8) * ‖(diagMax (os

Proved

BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le

by leonardopedro · Oct 10, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterNavierStokesHermiteFarisLavine.

BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le (hκ : 0 ≤ κ) (x : maxDom (oscSymbol κ)) : (∑' n, (ampSeq κ ((x : L2I ℕ) : ℕ → ℂ) n) ^ 2) ≤ (1 / 8) * ‖(diagMax (oscSymbol κ) x : L2I ℕ)‖ ^ 2 + (κ ^ 2 / 2) * ‖(x : L2I ℕ)‖ ^ 2

Formalization note: Lean 4 identifier BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le.

Preamble

-- Generated from ChapterNavierStokesHermiteFarisLavine.lean — theorem BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le
import Mathlib
import Definitions.Def_ChapterNavierStokesHermiteFarisLavine
import Definitions.Def_ChapterNavierStokesIkebeKato
import Definitions.Def_ChapterNavierStokesAffineFiberEsa
open BookProof.NavierStokesFlow
open BookProof.NavierStokesFlow
open BookProof.NavierStokesFlow.HermiteFarisLavine


open scoped ENNReal



open LpNat BookProof.FarisLavine IkebeKato

variable {κ : ℝ}
variable {x : maxDom (oscSymbol κ)}

Formal statement

theorem BookProof.NavierStokesFlow.HermiteFarisLavine.tsum_ampSeq_sq_le (hκ : 0 ≤ κ) (x : maxDom (oscSymbol κ)) :
    (∑' n, (ampSeq κ ((x : L2I ℕ) : ℕ → ℂ) n) ^ 2)
      ≤ (1 / 8) * ‖(diagMax (oscSymbol κ) x : L2I ℕ)‖ ^ 2 + (κ ^ 2 / 2) * ‖(x : L2I ℕ)‖ ^ 2 := by sorry

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