Structures algébriques Anneaux et corps 1 Anneaux
... x = a + b?2 et y = c + d?2, ?(x+y) = ?(a+b?2+c+d?2) = ?((a+c)+(b+d)?2) = (a+c)?(b+d)?2=(a?b?2)+(c?d)?2 = ?(x)+?(y) ?(x × y) = ?((a + b?2)(c + d?2)) = ?(( ...Télécharger Structures algébriques Anneaux et corps 1 Anneaux pdf
