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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
Added to reduced scheme a characterization of reducedness by the internal language of the corresponding sheaf topos: A scheme $X$ is reduced iff its structure ring $\mathcal{O}_X$ is a residue field in the internal sense of $\mathrm{Sh}(X)$.
Thanks!
I have added some more links and a little bit of trivial this and that.
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