Maximal cyclotomic extension of the real numbers
= Maximal cyclotomic extension of the real numbers
The maximal cyclotomic extension of $\mathbb R$ is $\mathbb C$, since adjoining a primitive fourth root of unity adjoins $i$.
= Maximal cyclotomic extension of the real numbers
The maximal cyclotomic extension of $\mathbb R$ is $\mathbb C$, since adjoining a primitive fourth root of unity adjoins $i$.