Objects in the 3rd Isomorphism Theorem
130379
How to calculate $(G/H)/(K/H)$?
99938
Is the conjugation map always an isomorphism?
97608
Showing a Ring of endomorphisms is isomorphic to a Ring
151047
a non trivial example: $G/H$ is isomorphic to $G$
83747
$2$ out of $3$ property of the unitary group
32340
Continuous bijections and their inverses
146356
To prove two sets are isomorphic is it sufficient to find 2 injections or 2 surjections?
45179
When does the isomorphism $G\simeq \ker(\phi)\times \operatorname{im}(\phi)$? hold?
122110
Character of the subobject classifier in the topos of $\mathbf{M}$-sets.
70658
Isomorphism between quotient modules
62711
Canonical map $R/(I\cap J)\rightarrow R/I\times _{R/(I+J)} R/J$ is an isomorphism
145462
On the canonical isomorphism between $V$ and $V^{**}$
50130
$\operatorname{Aut}(V)$ is isomorphic to $S_3$
147667
Polynomial ring isomorphisms
29756
Classsifying 1- and 2- dimensional Algebras, up to Isomorphism
52556
Isomorphism of $S^1$.
18540
Isomorphism from $\mathbb{C}[G]$ to $\prod_{i=1}^h M_{n_i}(\mathbb{C})$.