Tag
algebraic

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T61: $\cos(\pi x)$ for rational $x$ (938 numbers)
T35: Algebraic numbers of degree 2 (848 numbers)
T60: Roots of unity (772 numbers)
T68: $j$-invariants of elliptic curves over quadratic fields with everywhere good reduction (395 numbers)
T17: Area of the regular n-gon (294 numbers)
T85: Volume of the Platonic solids (25 numbers)
T86: Surface area of the Platonic solids (25 numbers)
T32: Golden ratio (2 numbers)