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• CommentRowNumber1.
• CommentAuthorDavidRoberts
• CommentTimeAug 16th 2010

shrinkable map, so I can reference it for Urs’ question on Hurewicz fibrations.

• CommentRowNumber2.
• CommentAuthorDavidRoberts
• CommentTimeAug 16th 2010

Urs prettied up shrinkable map, and added it as an example to Dold fibration (with a little correction from me: we don’t need a numerable cover to be good for its geometric realisation to have shrinkable projection).

• CommentRowNumber3.
• CommentAuthorDavidRoberts
• CommentTimeAug 16th 2010

Added comment that the implication shrinkable $\Rightarrow$ Dold fibration is a theorem about locally homotopy trivial maps, and that a shrinkable map is globally homotopy trivial with trivial fibre.