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| ``Cartesian product''
by pahio on 2004-09-30 13:40:05 |
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Why the generalized Cartesian product is here denoted by using the \prod (= upper-case pi or russian "p") symbol? I think it does not tally with the cross symbol used in Cartesian product of two sets. I have seen that some textbooks and some teachers in university use the more logical \bigtimes symbol. Is the cause of the PM practice that the PM LaTeX does not yet contain the \bigtimes symbol? |
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