Utilities puzzle mug(mathsgear.co.uk)
mathsgear.co.uk
Utilities puzzle mug
http://mathsgear.co.uk/products/utilities-puzzle-mug
2 comments
For anybody that doesn't know what's going on: https://en.wikipedia.org/wiki/Water,_gas,_and_electricity
This can be solved on a torus, no?
To some extent, that's the point. People go "Oh! Three utilities - nice problem - excellent mug."
It's sometimes only much later that people go "Hang on! It can be solved on the mug!"
It's a cool mug.
It's sometimes only much later that people go "Hang on! It can be solved on the mug!"
It's a cool mug.
Yes. K_{3,3} can be embedded on a torus.