The Lean 4 theorem `diagMax_quadForm_ge_norm_sq` in the `ChapterNavierStokesIkebeKato` chapter of the timepiece formalization

-- Generated from ChapterNavierStokesIkebeKato.lean — theorem BookProof.NavierStokesFlow.IkebeKato.diagMax_quadForm_ge_norm_sq
import Mathlib
import Definitions.Def_ChapterNavierStokesIkebeKato
import Definitions.Def_ChapterFarisLavineCore
import Definitions.Def_ChapterNavierStokesAffineFiberEsa
open BookProof.NavierStokesFlow
open BookProof.NavierStokesFlow.IkebeKato


open scoped ENNReal



open LpNat BookProof.FarisLavine

variable {ι : Type*}

theorem BookProof.NavierStokesFlow.IkebeKato.diagMax_quadForm_ge_norm_sq (c : ι → ℝ) (hc : ∀ k, 1 ≤ c k) (x : maxDom c) :
    ‖(x : L2I ι)‖ ^ 2 ≤ quadForm (diagMax c) x := by sorry