How can we decide two elliptic curves over Q are isomorphic over Q?
93404
J-invariant and isomorphism of elliptic curves over $\mathbb{Q}$
128881
Why is $y^2 = 1+x^4$ an elliptic curve?
45302
Finding the $\mathbb{Q}$-automorphisms of the splitting field of $x^p-2$ over $\mathbb{Q}$.
60925
Why these are isomorphic each other for given these rings?
146334
Are there fields $F$ such that the rings $F[x]/(x^2)$ and $F[x]/(x^2-1)$ are isomorphic?
113413
How do I show that two groups are not isomorphic?
148203
The genus of an algebraic curve is invariant under isomorphisms
136422
Two finite fields with the same number of elements are isomorphic
72211
Isomorphism involving Eilenberg-Maclane space, Tors.
79972
Determining whether two $k$-chromatic graphs are isomorphic (respecting vertex coloration)
37928
Isomorphism between $D_{2n}/Z(D_{2n})$ and $D_n$
121449
An isomorphism from $GL_{2}(\mathbb{F_{2}})$ to $S_{3}$
87766
Using Cayley's Theorem to find an isomorphic subgroup.
109596
Isomorphism from $\mathrm{Aut}(\mathbb{Z}/2\mathbb{Z}\times \mathbb{Z}/2\mathbb{Z})$ to $S_3$
146356
To prove two sets are isomorphic is it sufficient to find 2 injections or 2 surjections?
80514
Why are elliptic curves constructed using prime fields and not composite fields?
7010
Example of two non-isomorphic fields which embed inside each other