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# Tag Archives: symmetry

## Post without words #14

(click here for a bigger version)

Posted in pattern, pictures, posts without words
Tagged graph, hypercube, projection, subset, symmetry
14 Comments

## Sums and symmetry

Let’s continue our exploration of roots of unity. Recall that for any positive integer , there are complex numbers, evenly spaced around the unit circle, whose th power is equal to . These are called the th roots of unity. … Continue reading