theorem gibbsVariance_nonneg [NeZero J] (ε x : Fin J → ℝ) (T h : ℝ)
(f : Fin J → ℝ) :
0 ≤ gibbsVariance ε x T h f := by
unfold gibbsVariance gibbsMean gibbsProb
exact variance_nonneg _ f (gibbsProb_sum_one ε x T h)
(fun j => le_of_lt (gibbsProb_pos ε x T h j))### Kramers Escape Rate