JohnF
Posts:
212
Registered:
5/27/08


Re: function arity > 2
Posted:
Jan 17, 2013 1:37 AM


Butch Malahide <fred.gal...@gmail.com> wrote: >> JohnF <john@please.see.sig.for.email.com> wrote: >>> Are there any functions f:N^3>N (domain integers) that can't >>> be decomposed into some g,h:N^2>N, where f(i,j,k)=g(i,h(j,k))? <big snip> > > See also Hilbert's 13th problem: > https://en.wikipedia.org/wiki/Hilbert%27s_thirteenth_problem
Thanks a lot, Fred. That certainly answers the question. Kind of surprising, to me, anyway, that it makes Hilbert's list. I'd tried googling before posting, but failed to construct a query that coughed up any relevant hits. Still takes humans to successfully do semantic searches. Thanks again,  John Forkosh ( mailto: j@f.com where j=john and f=forkosh )

