The Foundations of Geometry

ISBN: 9781332976195 出版年：2016 页码：170 David Hilbert Forgotten Books

Instead of determine, we may also employ other forms Of expression; for example, we may say A lies upon a, A is a point of a, a goes through A and through B, a joins A and or with 8, etc. If A lies upon a and at the same time upon another straight line 6, we make use also Of the ex pression: The straight lines a and e have the point A in common, etc.