`BookProof.FriedrichsSquare.frExt_quadForm_nonneg` (A : D →ₗ[ℂ] F) (hdense : Dense (D : Set F)) (hsym : SymmetricOn D A) (x : frDom A) : 0 ≤ (inner ℂ (x : F) (frExt A hdense hsym x

Initializing...

`BookProof.FriedrichsSquare.frExt_quadForm_nonneg` (A : D →ₗ[ℂ] F) (hdense : Dense (D : Set F)) (hsym : SymmetricOn D A) (x : frDom A) : 0 ≤ (inner ℂ (x : F) (frExt A hdense hsym x · Prove2Me