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Wikipedia

Infinity cube

An Infinity cube is a kind of mechanical puzzle toy with mathematical principles. Its shape is similar to a 2×2 Rubik's cube. It can be opened and put back together from different directions, thus creating a visually interesting effect.

An Infinity cube made of dice being played with
An animation showing different moves and states of the Infinity cube (click to animate)

Construction Edit

 
The hinges are coloured, the glow denoting the next hinges to be employed. From the 6 cycle state of the Infinity cube, you can see that its group representation is isomorphic to  .

The principle of the infinity cube is simple and can be made by hand with simple paper cutting and pasting. First make 8 small cubes, then arrange the small cubes in a 2 by 2 by 2 way, and tape 8 edges together. When combined, there are 28 small squares exposed and 20 small squares hidden inside.

Mathematics Edit

Like the Rubik's Cube, the various states of the Infinity Cube can be represented as a group, but the Infinity Cube has far fewer permutations than the Rubik's Cube.

Rubik's Cube group have   permutations[1][2] and isomorphic to the below groupware   are alternating groups and   are cyclic groups

 

The largest group representation for Infinity Cube only contains 6 elements, and can be represented as:

 

See also Edit

References Edit

  1. ^ Schönert, Martin. "Analyzing Rubik's Cube with GAP".
  2. ^ Tom Davis, "Rubik's Cube. Part II", p.23 in, Zvezdelina Stankova, Tom Rike (eds), A Decade of the Berkeley Math Circle, American Mathematical Society, 2015 ISBN 9780821849125.

External links Edit

  • Magic Folding Cube - Mathematische-Basteleien
  • How To Make A Paper INFINITY CUBE! on YouTube

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