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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeJun 14th 2017
• (edited Jun 14th 2017)

Is the Strøm model category left proper? I know that pushout along cofibrations of homotopy equivalences of the form $A \to \ast$ are again homotopy equivalences. (e.g. Hatcher 0.17) Maybe the proof directly generalizes, haven’t checked.

1. Hi Urs, all objects are cofibrant, so yes :-).

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeJun 14th 2017

Ah, right. Thanks.

• CommentRowNumber4.
• CommentAuthorDavidRoberts
• CommentTimeMay 30th 2019

Placed reference to original paper where it is referenced in the intro paragraph.