Talk:Computably enumerable set: Difference between revisions

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:The problem is that there is no definition of an r.e. set of teacups, because no computer has ever been seen to output a teacup. [[User:CMummert|CMummert]] · <small>[[User talk:CMummert|talk]]</small> 13:14, 28 February 2007 (UTC)
 
:No computer has ever been seen to output a natural number, either. But the set of natural numbers is r.e. all the same. --[[User:Futonchild|Futonchild]] 17:04, 28 February 2007 (UTC)