Hi, On 11 Feb., 09:56, Simon King <simon.k...@uni-jena.de> wrote: > Well, I had the impression that a couple of people are in favour of > the following: > gcd(a/b,c/d) := gcd(a,c)/lcm(b,d) > lcm(a/b,c/d) := lcm(a,c)/gcd(b,d)
It just occurs to me that I am incredibly stupid. The definition above wouldn't work at all, it isn't even well-defined. Just replace gcd(1/4,1/6) by gcd(3/12,9/54). You obtain gcd(1,1)/ lcm(4,6) = 1/12, but gcd(3,9)/lcm(12,54) = 1/36. Does anyone have a better idea? Would it be a correct definition if one insisted on reduced fractions? Cheers, Simon -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
