It is now considered one of the great classics and has been reprinted several times. Hellinger also worked on the history of mathematics and, while at Frankfurt, he wrote an important paper on James Gregory .
Ito ay itinuturing na ngayon ng isa sa mga dakilang Classics at ito ay reprinted ng ilang beses. Hellinger din nagtrabaho sa kasaysayan ng matematika at, habang sa Frankfurt, wrote siya ng isang mahalagang papel sa James Gregory.