Lemma 1 of Arrow’s Impossibility Theorem, case study help

How do i complete the proof of Case 3 and Case 4 in Lemma 1 of Arrow’s Impossibility Theorem (file Lemma 1.pdf)

Please provide answer and detailed explanation.

Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount!
Use Discount Code "Newclient" for a 15% Discount!

NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.