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Prodigi

Five Cubes, Autumn Unisex Short Sleeve T-Shirt

Five Cubes, Autumn Unisex Short Sleeve T-Shirt

Regular price $32.00 USD
Regular price Sale price $32.00 USD
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Let \(\phi = \frac{1}{2}(1 + \sqrt{5})\) be the golden ratio. Start with a cube aligned with the Cartesian axes and rotate the cube by multiples of one-fifth of a turn about the axis through \((0, 1, \phi)\) (or any other axis obtained by permuting coordinates). The resulting union of five cubes has icosahedral symmetry.

Rotations of space that preserve the union of the five cubes permute the set of five cubes by an ``even permutation'' (a composition of an even number of swaps). Conversely, every even permutation on the set of five cubes is effected by a unique rotation of space. The group of rotation symmetries of the union is isomorphic to the alternating group on five letters.

Crew neck T-shirt with short sleeves and designed with superior Airlume combed and ring-spun cotton. Offered in a variety of solid and heather cvc colours.

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