- #1
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Well, I have trouble understanding the definition of the weak product of a family of groups, which states that it is the set of all [itex]f \in \prod_{i \in I} G_{i}[/itex] such that [itex]f(i) = e_{i} \in G_{i}[/itex], for all but a finite number of i from I (Gi is a family of groups indexed by the set I).
The bolded part causes confusion.
Further on, the book says that, if I is finite, the weak direct product coincides with the direct product. Even this fact didn't help me understand the definition of the weak direct product.
Thanks in advance.
The bolded part causes confusion.
Further on, the book says that, if I is finite, the weak direct product coincides with the direct product. Even this fact didn't help me understand the definition of the weak direct product.
Thanks in advance.