`BookProof.ChapterAbelianClassificationList.vonNeumann_abelian_classification_list` : (atomSet mu).Countable ∧ ((mu (atomSet mu)ᶜ = 0 ∧ (atomSet mu).Finite) ∨ (mu (atomSet mu)ᶜ = 0

Initializing...

`BookProof.ChapterAbelianClassificationList.vonNeumann_abelian_classification_list` : (atomSet mu).Countable ∧ ((mu (atomSet mu)ᶜ = 0 ∧ (atomSet mu).Finite) ∨ (mu (atomSet mu)ᶜ = 0 · Prove2Me