Polyhedra

hiremebecauseimsmart:

Polygons (2), polyhedra (3), polychora (4-D), and polytopes (∀) can be represented as a graph — the same network-skeletal structure that models

• Facebook friends
• computer networks
• loop quantum gravity
• spin foams
• Ising magnetism
• molecules
• subway maps
• scientific collaboration
• artistic composition
• skitter plots of the WWW
• economies
• ecosystems
• and crystal lattices.

For example, this is a skeletal graph of a cube:

So are these:

And here’s a skeletal graph of a 4-cube (tesseract).

Triangle = Blood

And now the news. A triangular face of a polytope has the exact same topology as the blood types.

That’s weird, right?

(Source: isomorphismes)

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