Not signed in (Sign In)

Start a new discussion

Not signed in

Want to take part in these discussions? Sign in if you have an account, or apply for one below

  • Sign in using OpenID

Discussion Tag Cloud

Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to nForum
If you want to take part in these discussions either sign in now (if you have an account), apply for one now (if you don't).
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeDec 18th 2014

    Added to Klein geometry a section History with quotations for where exactly Klein actually speaks about G/HG/H.

    (This key passages is a bit hidden in Klein’s text, appearing at a somewhat unexpected point somewhere in the middle of a 35 page document.)

  1. Iso(d,1)Iso(d,1) contains parity-reversal and time-reversal. To obtain d+1\mathbb{R}^{d+1} from a quotient of Iso(d,1)Iso(d,1), we must quotient these out. Therefore the stabilizer subgroup HH is O(d,1)O(d,1) rather than SO(d,1)SO(d,1).


    diff, v12, current

    • CommentRowNumber3.
    • CommentAuthorUrs
    • CommentTimeMar 3rd 2019

    thanks for catching. It was, luckily, correct in the table right below that erroneous line.

    • CommentRowNumber4.
    • CommentAuthorUrs
    • CommentTimeApr 11th 2021

    I have added the publication data and the DOI for the German original, and the projeceuclid-link for the English translation of:

    will give this its own category:reference-page now

    diff, v13, current

Add your comments
  • Please log in or leave your comment as a "guest post". If commenting as a "guest", please include your name in the message as a courtesy. Note: only certain categories allow guest posts.
  • To produce a hyperlink to an nLab entry, simply put double square brackets around its name, e.g. [[category]]. To use (La)TeX mathematics in your post, make sure Markdown+Itex is selected below and put your mathematics between dollar signs as usual. Only a subset of the usual TeX math commands are accepted: see here for a list.

  • (Help)