Fictitious Problems in Mathematics

@article{BryanFictitiousPI,
  title={Fictitious Problems in Mathematics},
  author={George H. Bryan},
  journal={Nature},
  volume={72},
  pages={102-102}
}
  • G. Bryan
  • Published 1 June 1905
  • Geology
  • Nature
As I take it, the mathematician's “perfectly rough body” means a body which never by any chance slips on any other body with which it is placed in contact, similarly the “perfectly smooth body” is supposed never to offer any tangential resistance to any other body which it touches. The inconsistency of this nomenclature is evident when we imagine the two bodies placed in contact with each other, as in the case of the perfectly rough plank resting on the smooth horizontal plane. The subsequent…