Good day. What is the sign of convergence for this series?
I think Integral Cauchy
Right?
It seems that you are right, you can use the integral Cauchy attribute, but, better ask mathematicians (here in another forum). The integral logarithm of the natural logarithm is obtained by the integral Cauchy criterion. If in doubt, try to use the dalamber sign.
Source: https://ru.stackoverflow.com/questions/113545/