(2.3) — Fenchel–Young inequality f(x) + g(y) ≥ (x | y) for f ∈ Γ₀(H) and its dual g

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(2.3) — Fenchel–Young inequality f(x) + g(y) ≥ (x | y) for f ∈ Γ₀(H) and its dual g · Prove2Me