3. Suppose E is a splitting field of g(x) E F[x] \ F over F. Suppose E = F[a] for some a. Prove that |Embf(E, E)| = number of distinct zeros of maf(x) in E, and deduce that | Embf(E,E)I < [E : F].
3. Suppose E is a splitting field of g(x) E F[x] \ F over F. Suppose E = F[a] for some a. Prove that |Embf(E, E)| = number of distinct zeros of maf(x) in E, and deduce that | Embf(E,E)I < [E : F].
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
![In this problem set, we use the following notation. Suppose E and L are field extensions of F. Let
Embf(E, L) := {0 : E → L | 0 is an F-linear injective ring homomorphism}.
By F-linear, we mean 0(c)
= c for every c E F.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F833481a2-df8c-4805-95a2-f24b64ba619f%2F9e1a2428-cd91-49a3-b680-9d1a2e996d72%2Fxrtdjre_processed.png&w=3840&q=75)
Transcribed Image Text:In this problem set, we use the following notation. Suppose E and L are field extensions of F. Let
Embf(E, L) := {0 : E → L | 0 is an F-linear injective ring homomorphism}.
By F-linear, we mean 0(c)
= c for every c E F.
![3. Suppose E is a splitting field of g(x) E F[x] \ F_over F. Suppose E = F[a] for some a. Prove that
|Embf(E,E)| = number of distinct zeros of ma,F(x) in E,
and deduce that | Embf(E, E)| < [E : F].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F833481a2-df8c-4805-95a2-f24b64ba619f%2F9e1a2428-cd91-49a3-b680-9d1a2e996d72%2F4m8eo3g_processed.png&w=3840&q=75)
Transcribed Image Text:3. Suppose E is a splitting field of g(x) E F[x] \ F_over F. Suppose E = F[a] for some a. Prove that
|Embf(E,E)| = number of distinct zeros of ma,F(x) in E,
and deduce that | Embf(E, E)| < [E : F].
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