24 라
what is the value of
product (11) {-4) in z15 is?
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Answer: hi friend here is your answer
Step-by-step explanation:0
It looks like OP is good to go, but just for completeness:
Suppose R1 and R2 are rings. Then the direct product of two rings, R1×R2 is defined as follows:
(a,b)∈R1×R2⟺a∈R1 and b∈R2. And further, for any (a,b) and (c,d)∈R1×R2:
(a,b)+(c,d)=(a+c,b+d)
(a,b)⋅(c,d)=(a⋅c,b⋅d)
Where a+c and a⋅c are carried out as they would be in R1, and likewise for b and d in R2.
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