Giocalbero
This sculpture of Tommaso Letteriello, placed at the Civic Museum of Natural History of Milan (December 2005) represents a tree and, from the mathematical point of view, provides a good representation of a tree (a connected and simply connected graph - that means, without loops).
© Tommaso Letteriello
foto di Tommaso Letteriello
The image belongs to the sections...:
Trees (Topology)
Sculptures (Anthology of images)
Further information:
http://www.tommasoletteriello.com/