On Sat, 18 Feb 2006, Mathieu Bouchard wrote:
There are more kinds of products than just that. with lists of 3 elements you may have the wedge-product (partial determinant). there are a bunch of other "inner" products according to Hilbert's inner product axioms. Basically a product could be any operator $ for which
(a*b)$c = a*(b$c) = b$(a*c)
where * is the product-by-scalar. That's damn wide. In math books, which
i didn't mean to use "$" as an operator to confuse people, it's just that there isn't much in ASCII that I can use that looks like it could be an infix operator and isn't already meaning something else.
In iso-8859-1 there's a bit more choice. I could've used "¥" or "¤" or "£" ;-)
or even "×" ...
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