Note: C is set containment
If R C F, where F is a field, show that F has a sub-field K such that R C K and K is isomorphic to Q.© BrainMass Inc. brainmass.com June 3, 2020, 5:11 pm ad1c9bdddf
R is an integral domain, it means R is a commutative ring with the multiplicative unit e. Suppose R C F, where F is a field. Now we construct a map f: Q->F. For any element x=a/b in Q, ...
A proof involving fields is offered in the solution.