In mathematics, it is possible to combine several rings into one large product ring. This is done as follows: if I is some index set and Ri is a ring for every i in I, then the cartesian product Πi in I Ri can be turned into a ring by defining the operations coordinatewise, i.e. (ai) + (bi) = (ai + bi) (ai) · (bi) = (ai · bi) The resulting ring is called a direct product of the rings Ri. The direct product of finitely many rings R1,... ,Rk is also written as R1 × R2 × ...

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  • In mathematics, it is possible to combine several rings into one large product ring. This is done as follows: if I is some index set and Ri is a ring for every i in I, then the cartesian product Πi in I Ri can be turned into a ring by defining the operations coordinatewise, i.e. (ai) + (bi) = (ai + bi) (ai) · (bi) = (ai · bi) The resulting ring is called a direct product of the rings Ri. The direct product of finitely many rings R1,... ,Rk is also written as R1 × R2 × ... × Rk.
  • En algèbre générale, il est possible de combiner plusieurs anneaux pour former un anneau appelé anneau produit.
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  • In mathematics, it is possible to combine several rings into one large product ring. This is done as follows: if I is some index set and Ri is a ring for every i in I, then the cartesian product Πi in I Ri can be turned into a ring by defining the operations coordinatewise, i.e. (ai) + (bi) = (ai + bi) (ai) · (bi) = (ai · bi) The resulting ring is called a direct product of the rings Ri. The direct product of finitely many rings R1,... ,Rk is also written as R1 × R2 × ...
  • En algèbre générale, il est possible de combiner plusieurs anneaux pour former un anneau appelé anneau produit.
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  • Product of rings
  • Produit d'anneaux
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