theorem rigidity_ordering {eps1 eps2 W1 W2 : ℝ}
(heps : eps2 < eps1) (hW : W2 < W1)
(_heps2 : 0 < eps2) (hW2 : 0 < W2) :
eps2 * W2 < eps1 * W1 :=
calc eps2 * W2 < eps1 * W2 := mul_lt_mul_of_pos_right heps hW2
_ ≤ eps1 * W1 := mul_le_mul_of_nonneg_left (le_of_lt hW) (by linarith)Proposition 6, Theorem 9, Corollaries 1-2 and 4: