Definition:Bloch's Constant/Historical Note

Historical Note Bloch's Constant
stated a lower bound for what is now known as Bloch's constant of $\dfrac 1 {72}$.

It is known that $\dfrac 1 {72}$ is not the best possible value for Bloch's constant.

In their $1983$ work, and  give $\dfrac {\sqrt 3} 4$.

The best value known at present is $\dfrac {\sqrt 3} 4 + \dfrac 2 {10 \, 000)$ which evaluates to approximately $0 \cdotp 43321 \, 2701$.

This was demonstrated by and  in $1996$.