They are not the initial axioms posted by Peano, but are named in his honor. Some types of the Peano axioms have one in place of 0. In common arithmetic, the successor of x displaystyle x "De acordo com Oxford: “Plágio é apresentar o trabalho ou ideias de outra pessoa https://share.evernote.com/note/f5ed0f3d-3352-3d51-727d-10fa609eb157