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Neighbor
Posts:
57
From:
It doesn't matter
Registered:
1/26/14


Axiom or theorem?
Posted:
Jun 14, 2014 2:46 PM


Let a,m,k?Z+ Is it an axiom or a theorem that [a(m)]k=a[m(k)] Since it is proved that ab=ba I suppose that the aforesaid proposition needs to be proved too, or maybe is it to be conceived as an axiom?
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