Integer coefficients in de Rham Cohomology
30678
Direct proof that the wedge product preserves integral cohomology classes?
63541
Projective and injective modules; direct sums and products
107821
The ring of integers of $\mathbf{Q}[i]$
35105
Density of ring of algebraic integers in $\mathbb C$
8087
Algebraic integers of $\mathbb{Q}(\sqrt{m})$ for $m$ a squarefree integer
144122
A problem about an $R$-module that is both injective and projective.
109801
multiplicative group of infinite fields
123130
Showing an isomorphism between exterior products of a free module
66866
Algebraic dual of $\mathbb{R}^{\mathbb{N}}$
120594
$\mathbb Z[i]/ \langle 1+2i \rangle \cong \mathbb Z_5$
7954
Roots of monic polynomial over a number ring
28324
Inverse image of the sheaf associated to a module
28934
Presentation of SL$(n,\mathbb{Z}_p)$
74974
When $\operatorname{Hom}_{R}(M,N)$ is finitely generated as $\mathbb Z$-module or $R$-module?
92211
When are $\mathbb Z_m$ and $\mathbb Z_n$ homomorphic?
141124
Automorphisms of the ring $\Bbb Z[x]$ of polynomials with integer coefficients
24919
$\mathbb{Q}(\zeta_{10}) $ degree of field extension over $\mathbb{Q}$