Is $\mathbb{Q}_p$ isomorphic to a subfield of $\mathbb{C}$ for some prime number $p$?
30192
How far are the $p$-adic numbers from being algebraically closed?
152481
If order of group is $p^2$, where $p$ is prime, how can you deduce $G$ is isomorphic to $C_{p^2}$ or $C_p \times C_p$?
72478
What is the isomorphism between the fields $(Z_2[x]^{<3},+_{x^3+x^2+1},\times_{x^3+x^2+1})$ and $(Z_2[x]^{<3},+_{x^3+x+1},\times_{x^3+x+1})$?
96549
Can we have a perfect field of characteristic $p$ with a non-archimedean valuation?
45627
Find a sub-ring of M(2, $\mathbb{Q}$) which is isomorphic to $\mathbb{Q}$
134701
Polynomials irreducible over $\mathbb{Q}$ but reducible over $\mathbb{F}_p$ for every prime $p$
108955
Showing $(\mathbb{Q},+)$ is not isomorphic to $(\mathbb{R},+)$
98256
Subfields of $\mathbb{Q}(\sqrt{2},\sqrt{3})$
145752
Aut $\mathbb Z_p\simeq \mathbb Z_{p-1}$
132714
Properties of p-adic valuations
97009
Image of ring homomorphism $\phi : \mathbb{Z}[t] \to \mathbb{Q}$?
76446
Why are cyclic groups of order $p$ (prime) unique up to isomorphism?
73652
Exhibiting an isomorphism between two finite fields
61084
Examples of non-isomorphic fields with isomorphic group of units and additive group structure
106091
Showing $\mathcal{P}(X)$ is isomorphic to $2^X$
146028
$GL(n, \mathbb{C})$ is isomorphic to a subgroup of $GL(2n, \mathbb{R})$
81844
How would you show that field automorphisms fix prime subfields?