Lemma 14.9 (projection lemma): for the projection v of w onto a convex H and every u ∈ H, ‖w − u‖² − ‖v − u‖² ≥ 0

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Lemma 14.9 (projection lemma): for the projection v of w onto a convex H and every u ∈ H, ‖w − u‖² − ‖v − u‖² ≥ 0 · Prove2Me