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10 cards from this deck
Numbers solving z^n = 1 in the complex plane.
On the unit circle in the complex plane.
Equal angles of 2π/n on the unit circle.
(z - 1)(z^{n-1} + ... + z + 1)
z = 1, -1, i, -i.
They appear in conjugate pairs for even n.
ω_k = e^{2πik/n}, for k = 0, 1, ..., n-1.
ω represents complex roots, simplifying calculations.
They assist in polynomial factorisation.
They speed up finding roots and zeroes.
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