theorem ceiling_nonneg {phi_prev sigma_n : ℝ} (hphi : 0 ≤ phi_prev) (hs : 0 < sigma_n) : 0 ≤ phi_prev / sigma_n := div_nonneg hphi (le_of_lt hs)
thesis/CESProofs/Hierarchy/TransitionDynamics.lean:38
Propositions 8-11, Theorems 10-12: Transition Dynamics