Talk:(B, N) pair

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Mathematics (Rated Start-class, Mid-importance)
WikiProject Mathematics
This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of Mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Mathematics rating:
Start Class
Mid Importance
 Field:  Algebra

In the definition, what does, for example, the w in BwB mean when w is in N/H but not strictly in G? Presumably the w actually means here any element in the H-coset which w represents. Perhaps this should be stated in the article. DRLB (talk) 18:12, 12 August 2010 (UTC)

It seems to have the standard meaning of coset: w=nH, BwB = BnHB = BnB and wBw = nHBnH= nHBHn = nBn, so coset or coset representative makes no difference. I don't see any reason to complicate it by switching to a coset representative when the coset itself is fine. JackSchmidt (talk) 18:38, 12 August 2010 (UTC)
Yes, that makes sense. DRLB (talk) 18:58, 12 August 2010 (UTC)

Spelling, punctuation, ....[edit]

In this article I found


and changed it to:

n − 1

Someone had included the "1" in the italics; there was no proper spacing before and after the minus sign, and a hyphen was used instead of a minus sign. All three differences are conspicuous.

See WP:MOSMATH. Use of TeX in an inline setting doesn't work well in Wikipedia, so we try to match TeX style closely in these conventions. Michael Hardy (talk) 19:20, 2 April 2011 (UTC)

definitions in literature[edit]

Could an expert explain the connection between the definition of (B, N) pair on the page and the definition as in Paul Garrett's book (, which is quite different? Thank you. — Preceding unsigned comment added by (talk) 05:45, 14 January 2014 (UTC)