Relation between divisions $\Bbb Z$ and $K[t]$
27281
How to prove $\,x^a-1 \mid x^b-1 \iff a\mid b$
39965
Partition of $\mathbb{Z}_8$ into cosets of Ker(θ)
33387
Proof that $n\Bbb Z \leq \Bbb Z$ and are the only subgroups of $\Bbb Z$
16512
Product of $T_1$ spaces is $T_1$
128989
Is ${\bf Z} \times {\bf Z}$ elementarily equivalent to ${\bf Z}$?
41069
Justifying $\,\Bbb{Z}[i]/\langle 2\rangle\cong \Bbb{Z}[X]/\langle X^2+1,2\rangle\cong \Bbb{F}_2[X]/\langle X^2+1\rangle$
44259
Heine-Borel Theorem ($\mathbb{R}^k$) (in ZF)
37953
Primary Decomposition of $\mathbb{R^n}$ under T
158127
Quotient space of $\Bbb C^n$ obtained by action of $S_n$
24259
Quotient ring of $T/I$
31391
bijection between $\mathbb{N}$ and $\mathbb{N}\times\mathbb{N}$
141124
Automorphisms of the ring $\Bbb Z[x]$ of polynomials with integer coefficients
7938
Number of Homomorphisms from $\Bbb{Z}_m$ to $\Bbb{Z}_n$
155828
How do I show that $A$ and $A^T$ are similar, given that the minimal polynomial of $A$ splits over $\mathbb{F}$?
4156
What is $\Bbb R^{\times}$? [unit group, ring to "times" power]
15626
Relations of a~b iff b = ak^2
64025
Ring homomorphisms from $\Bbb Q$ into a ring