Is $\mathbb{R}$ isomorphic to $\mathbb{R}(x)$?
93017
Isomorphism between $\Bbb R$ and $\Bbb R(X)$?
2575
Showing that $\mathbb{R}$ is connected
98587
$\mathbb Z [X] / (X)$ isomorphic to $\mathbb Z[X] / (X+1)$ isomorphic to $\mathbb Z [X] / (X+2015)$
120811
What does "isomorphic" mean in linear algebra?
72644
Continuous injective map $f:\mathbb{R}^3 \to \mathbb{R}$?
57166
Showing that $\Bbb R[x] / \langle x^2 + 1 \rangle$ is isomorphic to $\Bbb C$ question
29452
Divisor in $\mathbb{C}[X]$ $\implies$ divisor in $\mathbb{R}[X]$?
33702
Is this an isomorphism possible?
116168
Is $e^x$ the only isomorphism between the groups $(\mathbb{R},+)$ and $(\mathbb{R}_{> 0},*)$?
109643
Prove that every isometry on $\mathbb{R}^2$ is bijective
69384
Are the following modules free and/or isomorphic?
91222
Isomorphism between $\mathfrak o(4,\mathbb R)$ and $\mathfrak o (3,\mathbb R) \oplus\mathfrak o (3,\mathbb R) $
87160
Prove $\mathbb{Z}_3[x]/(x^2+1)$ and $\mathbb{Z}_3[x]/(x^2+x-1)$ are isomorphic.
27670
Group homomorphisms $\mathbb{Q}\to\mathbb{R}$
106091
Showing $\mathcal{P}(X)$ is isomorphic to $2^X$
41872
Show that $\mathbb{R}^2$ is not homeomorphic to $\mathbb{R}^2 \setminus\{(0,0)\}$
84869
Are the groups $\mathbb{C}$ and $\mathbb{R}$ isomorphic?