there
Is the following statement is true?
$\forall k \in \mathbf{N},\exists{m}\in\mathbf{N}, k!\pi+\frac{\pi}{6}\le{m!}\le{k!\pi}+\frac{5\pi}{6}$
I tried by descendant proof but was not satisfied by the arguement.
there
Is the following statement is true?
$\forall k \in \mathbf{N},\exists{m}\in\mathbf{N}, k!\pi+\frac{\pi}{6}\le{m!}\le{k!\pi}+\frac{5\pi}{6}$
I tried by descendant proof but was not satisfied by the arguement.
If such $m$ exists, $k<m$ obviously, so $(k+1)!\le m!$. But if $k$ is sufficiently large, $(k+1)!>k!\pi+\frac56\pi$, which contradicts with the condition. Thus, the statement is false.