Re: RM and definition of relations/tuples
From: Martin Zapf <Martin_Zapf_at_gmx.net>
Date: Fri, 25 Nov 2005 13:19:49 +0100
Message-ID: <dm6vhe$dcv$1_at_online.de>
Date: Fri, 25 Nov 2005 13:19:49 +0100
Message-ID: <dm6vhe$dcv$1_at_online.de>
>
> How you define the cartesian product ?
>
>
Im used to the "classic" definition wich I learned in school and university. You can find this definition at paragraph 'Cartesian square and n-ary product' on http://en.wikipedia.org/wiki/Cartesian_product. Consider that the pairs or Tuples are ordered in this defintion. E.g. element (1,2,3) of the cartesian Product IN^3:=IN x IN x IN is unequal to element (3,2,1) of IN^3. Received on Fri Nov 25 2005 - 13:19:49 CET