`BookProof.TruncationGapLift.norm_add_sq_of_galerkin_tail` (b : HilbertBasis ℕ ℂ F) {m : ℕ} {x w : F} (hx : x ∈ galerkinSpan b m) (hw : w ∈ tailSpan b m) : ‖x + w‖ ^ 2 = ‖x‖ ^ 2 +

Initializing...

`BookProof.TruncationGapLift.norm_add_sq_of_galerkin_tail` (b : HilbertBasis ℕ ℂ F) {m : ℕ} {x w : F} (hx : x ∈ galerkinSpan b m) (hw : w ∈ tailSpan b m) : ‖x + w‖ ^ 2 = ‖x‖ ^ 2 + · Prove2Me