`BookProof.ChapterF6.mgSum_add_single` (T : α →₀ ℕ) (x : α) : mgSum (T + Finsupp.single x 1) = mgSum T + 1

Initializing...

`BookProof.ChapterF6.mgSum_add_single` (T : α →₀ ℕ) (x : α) : mgSum (T + Finsupp.single x 1) = mgSum T + 1 · Prove2Me