Subadditive cost game
= Subadditive cost game
{title2=$c(S\cup T)\leq c(S)+c(T)\quad(S\cap T=\varnothing)$}
A <cooperative cost game> in which disjoint <coalitions> can merge without increasing their combined cost. Negating its cost function gives a <superadditive coalitional game>. Subadditivity by itself does not ensure a nonempty cost <core>.