Now, more than 122 years after it was first proposed, Kamata and two other mathematicians have finally proved that a solution ...

Then the judge writes 12 under edges, and the corners of the cube are highlighted next and 8 recorded under vertices. NARRATOR: Edges - that's twelve. Right, what about corners, or vertices - that ...

In graph theory, a graph is a network of lines, called edges, and points where they meet, called vertices. After 122 years, a team of mathematicians has finally solved the puzzle. They proved that ...