Whether this caused Daniel to become less interested in mathematics or whether it was the fact that his academic position was a non mathematical one, certainly Daniel never regained the vigour for mathematical research that he showed in St Petersburg.
Kung ito sanhi Daniel na maging hindi gaanong interesado sa matematika o kung ito man ay ang katunayan na ang kanyang academic posisyon ay isang hindi matematiko isa, tiyak Daniel hindi regained ang kalusugan para sa matematika pananaliksik na siya ay nagpakita sa St Petersburg.