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Units of the quadratic field Q square root of five

For

K = Q (5)

,

O_{K} = Z [\frac{1 + 5}{2}] .

Writing

ϕ = (1 + 5) /2

, the full unit group is

O_{K}^{\times} = {\pm ϕ^{n} : n \in Z} .

 Ancestors (6)

 Incoming links (1)

Solution