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> **On some properties of $$\mathbb{R}$$-trees and a generalization of them**
> We will start with the definition and basic properties of $$\mathbb{R}$$-trees and then present some their geometrical properties. In the second part of the talk we will present a certain generalization of the notion of $$\mathbb{R}$$-tree.
Marcin Borkowski
On some properties of 
-trees and a generalization of them
We will start with the definition and basic properties of -trees and then present some their geometrical properties. In the second part of the talk we will present a certain generalization of the notion of -tree.