Cseh, Ágnes; Kavitha, Telikepalli - 2020
goal is to construct a matching in G that is "globallystable" or popular. A matching M is popular if M does not lose a head …-to-head election againstany matching M': here each vertex casts a vote forthe matching in {M,M'} in which it gets abetter assignment … not. The popular matching problem in Gis easy to solve for odd n. Surprisingly, the problem becomes NP-hard for even n, as …