Fields and proper subfields.
108156
Algebraic closure of $\mathbb{C}(x)$ is isomorphic to $\mathbb{C}$
142661
Reorganizing fields in data extension
71102
Subfields of $\mathbb{C}$ which are connected with induced topology
101098
Field extensions with(out) a common extension
25793
Extension fields isomorphic to fields of matrices
59882
is it possible for two fields with the same characteristic to not be isomorphic?
83009
Showing that $R(x)$ is a proper subset of $R((x))$ if $R$ is a field
112901
Matrix on complex field.
109801
multiplicative group of infinite fields
134458
Isomorphisms preserving integral domains and fields
126127
A field extension of prime degree
107605
Determining the characteristic of a field
111347
Finding an example of field extensions satisfying certain properties
60865
What are fields?
126552
Number of subfields of finite field
79725
Fields of arbitrary cardinality
106737
A problem on field extension