18 Sep
2020
18 Sep
'20
6:59 a.m.
Oops, obvious typo where "d" should be "a", sorry. Call this iteration agm3, I checked that: agm3[1,2,3] = 1.8932121023002878019777... converges but it is not in the OEIS. Compare with https://oeis.org/A068521. On Fri, Sep 18, 2020 at 7:40 AM Brad Klee <bradklee@gmail.com> wrote:
Another possibility is:
a = (a+b+c)/3 b = [(a*b)^(1/2)+(b*c)^(1/2)+(c*d)^(1/2)]/3 <## Ed. Note: Typo Here c = (a*b*c)^(1/3)
Is this the best generalization of the agm to three (or more) variables? Does it even converge?