Talk:Homotopy colimit and limit

Poor quality
This writeup is extremely poor quality. I may work on it sporadically, but improvements by people that actually know the subject would be very welcome. 18:05, 18 June 2014‎ User:109.130.126.75


 * Yes agreed. The lower-level pages, such as cofibration and mapping cylinder also require additional cleanup and extension, so that they can serve as the launching pad to this topic -- and to serve as its simpler examples. There's also an old idea that a category with all pushouts and equalizers has all colimits, and dually, all pullbacks and equalizers has all limits. So I figure there is a more refined statement of that, here, as well. And finally, since these are just fibrations and cofibrations, I think this means that it should touch onto the model category. So that would be an outline for a more encyclopaedic view. 67.198.37.16 (talk) 19:43, 5 September 2016 (UTC)