Chapter

Classic Papers in Combinatorics

Part of the series Modern Birkhäuser Classics pp 49-56

A Combinatorial Problem in Geometry

  • P. ErdösAffiliated with
  • , G. SzckeresAffiliated with

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Abstract

Our present problem has been suggested by Miss Esther Klein in connection with the following proposition.

From 5 points of the plane of which no three lie on the same straight line it is always possible to select 4 points determining a convex quadrilateral.