Let p: Z → Z30 be the map p(x) = 21x. 1. Show that p is a ring homomorphism. 2. Find Ker(y). 3. Find Im(p). 4. What is the conclusion of applying the first isomorphism theorem on p.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Let p: Z→ 230 be the map
p(x) :
= 21x.
1. Show that p is a ring
homomorphism.
2. Find Ker(y).
3. Find Im().
4. What is the conclusion of
applying the first isomorphism
theorem on p.
Transcribed Image Text:Let p: Z→ 230 be the map p(x) : = 21x. 1. Show that p is a ring homomorphism. 2. Find Ker(y). 3. Find Im(). 4. What is the conclusion of applying the first isomorphism theorem on p.
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