Talk:Geometric invariant theory

Geometric invariant theory (book)

It seems that this article is almost exclusively devoted to description of Mumford's classic book, not the theory per se, and certainly, not in its modern form. Would it make sense to split the article in two and treat GIT separately from David Mumford, Geometric invariant theory, 1965? Arcfrk 06:04, 25 June 2007 (UTC)

No, the reason it is from the GIT book is that I have the book, and I don't know much about the later theory. I find Mumford's insights very interesting, always. But it would be natural just to add more sections updating it all. Charles Matthews 21:08, 25 June 2007 (UTC)

Stable point

Should 'Stable point' really redirect here? Seems like something that could use a disambig page. geeoharee (talk) 11:20, 13 April 2012 (UTC)

It should redirect here to section "Stability". It should also not to be confused with stable fixed point. I have fixed this. D.Lazard (talk) 15:18, 13 April 2012 (UTC)

Polynomial functions on a vector space

Is "the space of polynomial functions R(V) on V" this algebra or related to it? ᛭ LokiClock (talk) 11:41, 31 October 2012 (UTC)

No, it's the symmetric algebra (rather than the tensor algebra) of the dual space of V. Sławomir Biały (talk) 12:52, 25 February 2013 (UTC)

External links modified

Hello fellow Wikipedians,

I have just modified one external link on Geometric invariant theory. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20110707002934/http://retro.seals.ch/digbib/view?rid=ensmat-001:1977:23::185 to http://retro.seals.ch/digbib/view?rid=ensmat-001:1977:23::185

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 18 January 2022).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 15:02, 9 January 2017 (UTC)

Examples of stability needed

Examples showing points which are stable, semi-stable, or unstable are needed. Furthermore, there should be a discussion about applications of stability and taking quotient stacks $[X_{ss}/G]$ for some $G$-variety $X$. — Preceding unsigned comment added by 97.122.75.155 (talk) 04:21, 18 July 2017 (UTC)

But some concrete examples, while useful, can be distracting in the article; I think it's better to have worked-out examples in the "GIT quotient" article. -- Taku (talk) 21:44, 20 July 2017 (UTC)