Dimitrov, Dinko; Borm, Peter; Hendrickx, Ruud L. P.; … - 2004
-emptiness of the strong core and the second domain restriction ensures non-emptiness of the weak core of the corresponding hedonic … games. Moreover, an element of the strong core under friends appreciation can be found in polynomial time, while finding an … element of the weak core under enemies aversion is NP-hard. We examine also the relationship between our domain restrictions …
