Ramsey number inequality problem

  • Thread starter Thread starter Bingk
  • Start date Start date
  • Tags Tags
    Inequality
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 2K views
Bingk
Messages
22
Reaction score
0
Prove that
[itex]R(p,q) \leq \left(\stackrel{p+q-2}{p-1}\right)[/itex]
where [itex]p[/itex] and [itex]q[/itex] are positive integers

I'm supposed to use induction on the inequality [itex]R(p,q) \leq R(p-1,q) + R(p,q-1)[/itex], but I'm having difficulty there.

How do I go about doing this? I can show it's true for [itex]p=q=1[/itex].
But, I can't see how I get the combination in the first inequality from an induction on the second inequality (which doesn't contain a combination) ...
 
Physics news on Phys.org