User blog comment:Ynought/My website/@comment-37246647-20190202015503/@comment-36957202-20190202080546


 * 1) is the rest of the array it can also be empty.By saying Cᵏ(#a₊#) i mean replace a by Cᵏ⁻¹(#a₊#) a times.Oh and when k=0 then the subscript + gets deleted