most recent 30 from http://mathoverflow.net 2013-05-20T04:29:45Z http://mathoverflow.net/feeds/question/92800 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/92800/monoids-in-a-barr-exact-category tetrapharmakon 2012-04-01T08:56:26Z 2012-04-01T08:56:26Z

<p>Is there a fast way to prove/disprove that the category of internal monoids in a Barr-exact category is itself Barr-exact? Direct computation seems sooo boring...</p>