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Dodane:
> **On some properties of $$\mathbb{R}$$-trees and a generalization of them**
> (Continuation of the [[2009-10-13 Seminar|2009-10-13]] and [[2009-10-20 Seminar|2009-10-20]] seminars)
Marcin Borkowski
On some properties of 
-trees and a generalization of them
(Continuation of the 2009-10-13 and 2009-10-20 seminars)