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Noetherian space

From Encyclopedia of Mathematics
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A topological space in which every strictly decreasing chain of closed subspaces breaks off. An equivalent condition is: Any non-empty family of closed subsets of ordered by inclusion has a minimal element. Every subspace of a Noetherian space is itself Noetherian. If a space has a finite covering by Noetherian subspaces, then is itself Noetherian. A space is Noetherian if and only if every open subset of is quasi-compact. A Noetherian space is the union of finitely many irreducible components.

Examples of Noetherian spaces are some spectra of commutative rings (cf. Spectrum of a ring). For a ring the space (the spectrum of ) is Noetherian if and only if is a Noetherian ring, where is the nil radical of .

References

[1] N. Bourbaki, "Elements of mathematics. Commutative algebra" , Addison-Wesley (1972) (Translated from French) MR0360549 Zbl 0279.13001


Comments

References

[a1] R. Hartshorne, "Algebraic geometry" , Springer (1977) MR0463157 Zbl 0367.14001
How to Cite This Entry:
Noetherian space. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Noetherian_space&oldid=35225
This article was adapted from an original article by L.V. Kuz'min (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article