Talk:Scheme (mathematics)
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[edit] Counterexample in section 'The category of schemes'
> But all proper closed subsets of Spec (Z[X]) are finite.
How about the closed set V((X))? It contains the prime ideals (X,2), (X,3), (X,5), ... —Preceding unsigned comment added by 129.69.181.4 (talk) 10:52, 7 March 2008 (UTC)