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Generic Partial Two-Point Sets Are Extendable

  Published:1999-03-01
 Printed: Mar 1999
  • Jan J. Dijkstra
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Abstract

It is shown that under $\ZFC$ almost all planar compacta that meet every line in at most two points are subsets of sets that meet every line in exactly two points. This result was previously obtained by the author jointly with K.~Kunen and J.~van~Mill under the assumption that Martin's Axiom is valid.
MSC Classifications: 57N05 show english descriptions Topology of $E^2$, $2$-manifolds 57N05 - Topology of $E^2$, $2$-manifolds
 

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