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Volume 31 - May 1947

Contents

Page 5 of 11

Other

Review

Mathematical notes

Review

Mathematical Notes

Reviews

Other

Research Article

  • The Cross and the Foundations of Euclidean Geometry

  • H. G. Forder
  • Published online by Cambridge University Press:
    03 November 2016, pp. 227-233

  • The main aim of this note is to give a new foundation of Euclidean geometry based on the notions of “cross” and “signed angle”. The reckoning with crosses, or directed angles, advocated by D. K. Picken has many merits: the rules are few, general, and simple, and one proof covers a number, often large, of special cases. I will first sketch the method, assuming Euclidean geometry already known.

Review

Mathematical notes

Mathematical Notes

Reviews

Mathematical notes

Reviews

Review

Mathematical Notes

Mathematical notes

Reviews

Review

Mathematical Notes

Page 5 of 11