Prove that if C denotes any collection of subfields of a field E, then the intersection
Chapter 26, Problem 26.20(choose chapter or problem)
Prove that if C denotes any collection of subfields of a field E, then the intersection of all thefields in C is also a subfield of F. (Compare 25.17.)
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer