Weakly dominant strategy
= Weakly dominant strategy
A <strategy> giving at least as large a <payoff> as every alternative against every opponent <strategy profile>. Under the convention distinguishing weak dominance from complete payoff equivalence, require a strict advantage somewhere. In a two-action <finite game>, it suffices to check the opponent's <pure strategies>: <expected payoff> differences against an opponent's <mixed strategy> are weighted averages of those pure-action comparisons.