Atiyah-Macdonald, Exercise 4.6
15128
Example of non-decomposable ideal
32772
Proving units in a ring
4996
Proving $Gal(K/\mathbb{Q})$ is $D_4$.
15210
Group of order 6 proof
65873
A proof for Atiyah-Macdonald Exercise I.21.iii
74918
Construction of addition and multiplication table for GF(4)
8694
$A_4$ is not isomorphic to $D_6$
103969
Exercise 3.39 of Fulton & Harris
35714
Adjoint pairs, triplets and quadruplets
81221
The prime number theorem over a finite field - Lang's *Algebra*, Chapter V, Exercise 23(b)
129157
An exercise on isomorphic groups of order 24
77969
Question about proof for $S_4 \cong V_4 \rtimes S_3$
16656
Atiyah and Macdonald, Proposition 2.9
91222
Isomorphism between $\mathfrak o(4,\mathbb R)$ and $\mathfrak o (3,\mathbb R) \oplus\mathfrak o (3,\mathbb R) $
62917
Associated Prime Ideals in a Noetherian Ring; Exercise 6.4 in Matsumura
130464
Exercise 2.11 Atiyah-Macdonald
42213
Computing $\text{Gal}(\mathbb{Q}^{ab}/\mathbb{Q})$