Coherent Topology - Examples

Examples

  • A topological space X is coherent with every open cover of X.
  • A topological space X is coherent with every locally finite closed cover of X.
  • A discrete space is coherent with every family of subspaces (including the empty family).
  • A topological space X is coherent with a partition of X if and only X is homeomorphic to the disjoint union of the elements of the partition.
  • Finitely generated spaces are those determined by the family of all finite subspaces.
  • Compactly generated spaces are those determined by the family of all compact subspaces.
  • A CW complex X is coherent with its family of n-skeletons Xn.

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