On 12/14/11 5:11 AM, Marijn wrote:
(gcd-rational 2/3 2/3 2/3)
2/3
(lcm-rational 2/3 2/3 2/3)
4/9
is that 4/9 the intended result?
No, I must've messed up the definition. Fortunately, Matthew did the
right thing when he implemented lcm:
Welcome to Racket v5.2.0.6.
(lcm 2/3 2/3 2/3)
2/3
2011/12/10 Stephen Bloch sbl...@adelphi.edu
On Dec 9, 2011, at 3:31 PM, Daniel King wrote:
On Fri, Dec 9, 2011 at 15:27, Carl Eastlund c...@ccs.neu.edu wrote:
What does divides even mean in Q? I think we need David to explain
what his extension of GCD and LCM means here, in that
On 12/10/11 9:25 AM, David Van Horn wrote:
On 12/9/11 3:31 PM, Daniel King wrote:
On Fri, Dec 9, 2011 at 15:27, Carl Eastlundc...@ccs.neu.edu wrote:
What does divides even mean in Q? I think we need David to explain
what his extension of GCD and LCM means here, in that divisors and
multiples
Subject: Re: [racket-dev] feature request: gcd, lcm for rationals
One definition of greatest common divisor in a ring R is:
d is a greatest common divisor of x and y when:
i) d divides both x and y
ii) If e is a divisor of both x and y, then d divides e
Now let's consider the ring Q. Since Q
On Fri, Dec 9, 2011 at 15:27, Carl Eastlund c...@ccs.neu.edu wrote:
What does divides even mean in Q? I think we need David to explain
what his extension of GCD and LCM means here, in that divisors and
multiples are fairly trivial things in Q.
I don't suppose to understand all the math on
On Dec 9, 2011, at 3:31 PM, Daniel King wrote:
On Fri, Dec 9, 2011 at 15:27, Carl Eastlund c...@ccs.neu.edu wrote:
What does divides even mean in Q? I think we need David to explain
what his extension of GCD and LCM means here, in that divisors and
multiples are fairly trivial things in Q.
I'll make this change.
At Wed, 07 Dec 2011 12:25:34 -0500, David Van Horn wrote:
It would be nice if gcd and lcm were extended to rational numbers, which
seems in-line with Scheme's philosophy (but not standards) on numbers.
(define (gcd-rational . rs)
(/ (apply gcd (map numerator rs))
7 matches
Mail list logo
