theorem headroom_zero_of_burden_ge_capacity
theorem headroom_zero_of_burden_ge_capacity: ∀ (s : HeadroomState), s.grossCapacity ≤ s.commitmentBurden → headroom s = 0
theorem headroom_zero_of_burden_ge_capacity
theorem headroom_zero_of_burden_ge_capacity: ∀ (s : HeadroomState), s.grossCapacity ≤ s.commitmentBurden → headroom s = 0