The problem of Königsberg bridges
The problem of Königsberg bridges: is there a path around the town that crosses one and just one time each of the seven bridges?
© matematita
The image belongs to the sections...:
From the exhibition matemilano (Topology)
Koenigsberg's bridges (Topology)
Images from the topology section (From the exhibitions of matematita)
Further information:
http://matemilano.mat.unimi.it