Talk:Bass–Serre theory

Comment and questions

You are doing an excellent work here, but i've some questions:

• Is it true that one of the first application of this subjet was the liberation of hierarchy methods in the proofs of the sphere, torus and annulus theorems?
• How much -if any- prominence play the concepts of the ends of spaces (or ends of groups) and of the almost-invariant sets?
• Would it be good to add Scott-Wall "topological methods in group theory" in the references? I think this survey illustrate perfectly the covering-space's role you mentioned, congrats again--kmath (talk) 06:03, 3 August 2008 (UTC)

I recast the q 'cuz i already read all the article--kmath (talk) 01:39, 4 August 2008 (UTC)

I am not sure about the first question (re sphere, torus and annulus theorems), I'll have to ask my colleagues who are 3-d topology experts. Regarding adding the Scott and Wall reference, sure, good idea, will do. Nsk92 (talk) 01:47, 4 August 2008 (UTC)

Assessment comment

The comment(s) below were originally left at Talk:Bass–Serre theory/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 The comments may be irrelevant or outdated; if so, please feel free to remove this section.

The initial assessment was done by User:RayAYang =Talk%3ABass%E2%80%93Serre_theory&diff=229866015&oldid=229687354 on August 4, 2008. Nsk92 (talk) 21:58, 2 December 2008 (UTC)

Last edited at 21:58, 2 December 2008 (UTC). Substituted at 01:48, 5 May 2016 (UTC)

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