Categories Mathematics [ a b c ] is a Post author By esimpk Post date June 16, 2021 No Comments on [ a b c ] is a zero matrix diagonal matrix column matrix row matrix ← [ 0 0 0 ] is → { – 3 n : n ε Z } IS an abelian group under Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.