Talk:Zariski topology

Latest comment: 2 years ago by D.Lazard in topic Sober property

closed point edit

It would be helpful to have an explanation of what a closed point is. Tkuvho (talk) 12:22, 9 February 2011 (UTC)Reply

It's a point x such that {x} is closed. --Zundark (talk) 16:29, 9 February 2011 (UTC)Reply

Assessment comment edit

The comment(s) below were originally left at Talk:Zariski topology/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

Fundamental in algebraic geometry. Please replace this comment by suggestions for improvements! Geometry guy 21:37, 20 May 2007 (UTC) The article is well explained, possibly B+, but needs references. Arcfrk 11:37, 26 May 2007 (UTC)Reply

Last edited at 11:37, 26 May 2007 (UTC). Substituted at 02:42, 5 May 2016 (UTC)

Sober property edit

I edited the article to mention that the Zariski topology was sober. The edit got reverted because "spectral space is not defined", when the section was literally about the spectra of a ring. The sober property is key to how the Zariski topology is typically used, because it is the strongest separation property that it satisfies, and it is closely related to generic points which are mentioned a lot in the article. Saolof (talk) 17:18, 17 August 2021 (UTC)Reply

This article is not for specialists of algebraic geometry or topology. It is for people desiring learning on Zariski topology. So, if the sober property is mentioned, its definition must be recalled, the Zariski topologies that are sober must be clearly identified (a classical algebraic variety is not sober), and the reasons for mentioning this property must be given. Also, as "sober" is a purely topological property, it is clearly invariant under homeomorphisms. So the use of "spectral space" (without any link) instead of "spectrum of a ring" (the subject of the section) is pedantry, as it serves only to make the article more difficult to understand to non-experts. D.Lazard (talk) 08:52, 18 August 2021 (UTC)Reply