Talk:Block (permutation group theory)
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[edit]There are further meanings of `block' in mathematics, see e.g. Block Theory and Block Design.
- Well, add them. This is a Wiki after all, be bold. Dysprosia 14:11, 20 January 2006 (UTC)
This page is difficult to understand because groups have an order, but sets do not. The difficulty is with the word "fix": it is not obvious what fixing means. It is clear however that the author is thinking of a totally ordered set, and that fact should be made explicit. —Preceding unsigned comment added by SergioPi (talk • contribs) 13:07, 8 October 2010 (UTC)
I don't think it's difficult to understand. The only place where "fix" is written is: "gB=B (g fixes B)". It doesn't have to do anything with totally ordered sets. (X is nothing else but a set on which G acts.) And of course "g fixes B" just means "gB=B for all g in G". (gB=B is a short version of {gb|b in B}=B.) —Preceding unsigned comment added by 93.129.49.238 (talk) 08:49, 3 March 2011 (UTC)
Merger proposal
[edit]- Oppose merging Primitive permutation group into this article: primitive groups have been introduced a long time before blocks and are basic for Galois theory. If a merger make sense, it would be to merge this article into Primitive permutation group, as a technical generalization of primitive groups. D.Lazard (talk) 15:48, 26 February 2017 (UTC)