Some thougts on cartesian products
Bryan Olson
fakeaddress at nowhere.org
Mon Jan 23 13:17:08 EST 2006
Steven D'Aprano wrote:
> Bryan Olson wrote:
>
>
[Christoph Zwerschke had written:]
>>>What I expect as the result is the "cartesian product" of the strings.
>>
>>There's no such thing; you'd have to define it first. Are duplicates
>>significant? Order?
>
>
> Google "cartesian product" and hit "I'm feeling lucky".
>
> Or go here: http://mathworld.wolfram.com/CartesianProduct.html
>
> Still think there is no such thing?
Uh, yes.
The Cartesian product of two sets A and B (also called the
product set, set direct product, or cross product) is defined to
be the set of [...]
All sets, no strings. What were you looking at?
(I'm also happy to see someone agrees with my capitalization of
"Cartesian".)
--
--Bryan
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