Name: Anonymous 2007-04-09 12:31 ID:jkUTkTMW
Bryce Bolin
7..7 (a)
There exist no subfield K of C with R ⊂ K ⊂ C and R =/= K =/= C.
a,b € R
a+b € R, K,C, as defined for the confines above with R,K and C being fields.
b(i)= bi
(a) + bi = a + bi
a + bi € C, K but not for R
So with R ⊂ K ⊂ C, it is not possible for K to be a subfield of C.
7..7 (a)
There exist no subfield K of C with R ⊂ K ⊂ C and R =/= K =/= C.
a,b € R
a+b € R, K,C, as defined for the confines above with R,K and C being fields.
b(i)= bi
(a) + bi = a + bi
a + bi € C, K but not for R
So with R ⊂ K ⊂ C, it is not possible for K to be a subfield of C.