No abstract

Multiple criteria analysis, rank reversal, AHP, indifferent criteria, 91B06,

Approximate algorithms, scheduling, list scheduling, 90B35,

In this paper we extend the negative known results about No Show Paradox in Condorcet voting functions and correspondences to the contexts of k-functions and k-correspondences, in which the outcome of the voting process is a unique k-committee (set of k candidates) or a family of k-committees. The main result of the paper states that for every Condorcet k-function and for every Condorcet k-correspondence, there are situations in which every optimistic or pessimistic voter with some specific preferences could manipulate the election by abstaining.

No abstract