New posts in Algebraic Number Theory

Show that $ \mathbb{Q}_3(i)$ is an unramified extension

Is $ \sqrt{2}$ an element of $ \mathbb{Q} ( \cos 72^\circ ) $?

Absolute Galois group of $\Bbb Q_p$ while varying $p$

Recognizing Principal Ideals

How to find all rational solutions of $\ x^2 + 3y^2 = 7 $?

Lorenzini's "Invitation to arithmetic geometry", 1st exercise

How does passing to ideals solve the problem of unique factorization?

What are the units in $\mathbb{Q}(\sqrt{2}, \sqrt{3})$?

How does 11 split in the ring $\mathbb{Z}[\sqrt[3]{2}]$

Brauer group of global fields