Index of intermediate fields
113411
If $E$ is generated by $E_1$ and $E_2$, then $[E:F]\leq [E_1:F][E_2:F]$?
145339
Index of the subgroup $\operatorname{Im}(f)$
144582
Index of a subgroup in $SL_2(\mathbb{Z})$
154318
Can a field be isomorphic to its subfield?
69935
Field extensions of finite degree and primitive elements
135341
number theory about index
82305
Creating an index in both asc and desc directions
7452
Splitting of primes in the compositum of fields
28313
Intermediate ring between a field and an algebraic extension.
51674
use of $\sum $ for uncountable indexing set
146446
Infinite Degree Algebraic Field Extensions
78412
Representing a countable field by $\Bbb N$ [transport of algebraic structure]
129476
The trace map in a finite field.
87467
Finding some missing subfields of a splitting field of $x^4-7$
27689
Separability over intersection of intermediate fields
59108
Book for field and galois theory.
126552
Number of subfields of finite field