Isomorphism between $B_2$ and $C_2$
44629
Why Lie algebras of type $B_2$ and $C_2$ are isomorphic?
143517
Isomorphisms Between a Finite-Dimensional Vector Space and its Dual
137285
Prove $\mathbb{Z}_2 \times \mathbb{Z}_2$ is not isomorphic to $\mathbb{Z}_4$
126098
Isomorphism of factor groups
136083
Show that $\sigma\circ\phi : G_1 \to G_3$ is an isomorphism
88928
$F:G\to B$ is an isomorphism between groups implies $F^{-1}$ is an isomorphism
57967
Difference between $\mathbb C$ and $\mathbb R^2$
13717
Homomorphisms from $S_4$ to $\mathbb Z_2$
38130
Complex structure on $\mathbb{C}\mathbb{P}^2\# \dots \# \mathbb{C}\mathbb{P}^2$
61491
Complex Ring Isomorphism
120035
Pattern in Isomorphisms between $\mathbb Z_m \times \mathbb Z_n$ and $\mathbb Z_{mn}$
108156
Algebraic closure of $\mathbb{C}(x)$ is isomorphic to $\mathbb{C}$
75988
Explicit isomorphism $S_4/V_4$ and $S_3$
52556
Isomorphism of $S^1$.
117151
Conformal automorphism of unit disk that interchanges two given points
70658
Isomorphism between quotient modules
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$