`BookProof.TruncationGapLift.quadForm_add_of_symmetricOn` (H : D →ₗ[ℂ] F) (hsym : SymmetricOn D H) (x w : D) : quadForm H (x + w) = quadForm H x + quadForm H w + 2 * (inner ℂ (x :

Initializing...

`BookProof.TruncationGapLift.quadForm_add_of_symmetricOn` (H : D →ₗ[ℂ] F) (hsym : SymmetricOn D H) (x w : D) : quadForm H (x + w) = quadForm H x + quadForm H w + 2 * (inner ℂ (x : · Prove2Me