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Jeremy Brazas
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A space $X$ whose topology agrees with the final topology with respect to all maps $I\to X$ is often called a delta-generated ($\Delta$-generated) space. The category of $\Delta$-generated spaces is a convenient category of spaces (in the sense of Steenrod) and is used in Diffeology, String Topology, and generalized covering spaces theories.

Jeremy Brazas
  • 7.2k
  • 1
  • 26
  • 47