ɪnðɪ əbˌʌv fˌɔːɹmjʊlˈeɪʃən, wiː kæn sˈɛt , sˌoʊ ðæt ɪts dˈuːəl kˈoʊn ɪz ˈɔːlsoʊ ðə sˈɛt ʌv nˈɑːnnˈɛɡətˌɪv ɹˈiːəl nˈʌmbɚz; ðɪs ɪz ɐ dˌɪfɚɹˈɛnʃəl kˌɑːmplɪməntˈæɹᵻɾi pɹˈɑːbləm.
In the above formulation, we can set , so that its dual cone  is also the set of non-negative real numbers; this is a differential complementarity problem.