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 concept s 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
Substituted at 01:48, 5 May 2016 (UTC)

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