`BookProof.ChapterF6.mgT_sum_add` (k : ℕ) (T : α →₀ ℕ) (s : List α) (hT : T.support.card ≤ k) : mgSum (mgT k T s) + (k + 1) * mgD k T s = mgSum T + s.length

Initializing...

`BookProof.ChapterF6.mgT_sum_add` (k : ℕ) (T : α →₀ ℕ) (s : List α) (hT : T.support.card ≤ k) : mgSum (mgT k T s) + (k + 1) * mgD k T s = mgSum T + s.length · Prove2Me