User blog comment:Boris Huller/need some help/@comment-30869823-20180514154224/@comment-30869823-20180514173734

Maybe it's better to define the growth rate using the smallest fgh function which outgrows it. \( F \) has growth rate \( \alpha \) if $f_\alpha>F) and \( F>f_\beta \) forall \( \beta<\alpha \)