Talk:Cartesian product

I feel a link to the coproduct <math>\coprod<math> is needed. MFH 22:20, 9 Mar 2005 (UTC)

Questions to be clarified

could u explain why the cartesian product of 2 sets is an inefficient operation to perform

I think your question is not well posed. As it stands, the answer might be: Because the sets could be uncountable sets. MFH 22:11, 9 Mar 2005 (UTC)
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