Comments on: Perfect Groups Viewed Topologically http://www.arsmathematica.net/archives/2008/08/04/perfect-groups-viewed-topologically/ Dedicated to the mathematical arts. Thu, 08 Jan 2009 12:54:27 +0000 http://wordpress.org/?v=2.5.1 By: Walt http://www.arsmathematica.net/archives/2008/08/04/perfect-groups-viewed-topologically/#comment-61354 Walt Mon, 11 Aug 2008 16:56:39 +0000 http://www.arsmathematica.net/?p=692#comment-61354 <blockquote> So far, what I like about it most is that it gives me hope for really understanding Quillen’s plus construction! </blockquote> I had the exact same reaction.

So far, what I like about it most is that it gives me hope for really understanding Quillen’s plus construction!

I had the exact same reaction.

]]> By: John Baez http://www.arsmathematica.net/archives/2008/08/04/perfect-groups-viewed-topologically/#comment-61351 John Baez Sun, 10 Aug 2008 18:22:50 +0000 http://www.arsmathematica.net/?p=692#comment-61351 Cool article. So far, what I like about it most is that it gives me hope for really understanding Quillen's plus construction! On page 6, it talks about a "Kan-Thurston theorem", which says that the homotopy category of spaces is equivalent to a category where an object is a group together with a perfect normal subgroup. Cool article. So far, what I like about it most is that it gives me hope for really understanding Quillen’s plus construction! On page 6, it talks about a “Kan-Thurston theorem”, which says that the homotopy category of spaces is equivalent to a category where an object is a group together with a perfect normal subgroup.

]]> By: Walt http://www.arsmathematica.net/archives/2008/08/04/perfect-groups-viewed-topologically/#comment-61308 Walt Wed, 06 Aug 2008 18:45:45 +0000 http://www.arsmathematica.net/?p=692#comment-61308 Fixed. Thanks! Fixed. Thanks!

]]> By: Eric Jablow http://www.arsmathematica.net/archives/2008/08/04/perfect-groups-viewed-topologically/#comment-61302 Eric Jablow Wed, 06 Aug 2008 03:43:32 +0000 http://www.arsmathematica.net/?p=692#comment-61302 Your link to the Wikipedia article on perfect groups has a typo. Your link to the Wikipedia article on perfect groups has a typo.

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