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coface needs a definition —Preceding unsigned comment added by 74.71.239.188 (talk) 14:14, 18 April 2010 (UTC)[reply]

I've linked it. ᛭ LokiClock (talk) 13:51, 5 October 2011 (UTC)[reply]

Just wanted to point out that any contractible complex is simple homotopy equivalent to a point, and have edited the article to reflect this. — Preceding unsigned comment added by 192.76.7.198 (talk) 17:12, 18 January 2013 (UTC)[reply]

Is there any intuitive description or example of the concept of collapse that, at least in my opinion, would make the concept more accessible to non-mathematicians (like me) and thus would maybe enrich the article? --131.152.224.31 (talk) 09:38, 12 October 2011 (UTC)[reply]

How are collapses related to homotopy? For example if we consider delta complexes. — Preceding unsigned comment added by 134.102.112.208 (talk) 09:50, 15 August 2016 (UTC)[reply]