The row bound from the packing bound and duality #
Dual.rowBoundPM_of_packing_of_cover : PackingBound → CoverDuality → RowBoundPM
(Theorem 6.8 of the paper from Lemma 6.5 and linear-programming duality, Proposition 6.7). As in
the paper, at each point x duality is applied to the demands t S = |f x - f (x^S)| with
K = π² d²; then S = Δ(x,y).