Determine all functions $f: \mathbb {N} \to \mathbb {N}$ such that
$n!\hspace{1mm} +\hspace{1mm} f(m)!\hspace{1mm} |\hspace{1mm} f(n)!\hspace{1mm} +\hspace{1mm} f(m!)$,
for all $m$, $n$ $\in$ $\mathbb{N}$.
Lukaluce wrote:
This problem was proposed at the 2018 BMO by Dorlir Ahmeti
Why do I feel like you don't know that dangerousliri is Dorlir Ahmeti?
@below oh now I see
MathPassionForever wrote:
Lukaluce wrote:
This problem was proposed at the 2018 BMO by Dorlir Ahmeti
Why do I feel like you don't know that dangerousliri is Dorlir Ahmeti?
I do, I just didn't see that he commented on this post lol