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When we have an algebraic variety we can identify the points of the variety with maximal ideals of the coordinate ring.

I would like to know why it is more natural to define the main structure of the theory of schemes, the affine scheme, with prime ideals and not with maximal ones.

When Grothendieck was creating theory of schemes, why did he decide to work with the normal spectrum instead of the maximal one?

(As you can see I dont have an strong background of Algebraic Geometry, I just want to have some intuition)

In which sense the schemes generalize the notion of variety and why is better to work with this notion?

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    Yes, if you have a function between rings you cannot define a natural function between the spectrum of maximal ideals of them. That's why we have to see the varieties as schemes over a field . Thanks!2012-04-17

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