2. For both parts below, let p :G → G' be a group homomorphism. Let H' be a subgroup of G'. Show that the set H = {g € G| p(g) € H'} is a (a) subgroup of G. (b) elH: H → for all h e H. Show that ker(9) = ker(4|). Hint: Show ker(4) c ker(4|,) and ker(4) Ɔ ker(9|4). Let H a subgroup of G containing ker(9). Define the homomorphism G' by yH = 4OL where i: H → G is the inclusion homomorphism t(h)

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter4: More On Groups
Section4.6: Quotient Groups
Problem 35E
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2. For both parts below, let p :G → G' be a group homomorphism.
Let H' be a subgroup of G'. Show that the set H = {g € G| p(g) € H'} is a
(a)
subgroup of G.
(b)
elH: H →
for all h e H. Show that ker(9) = ker(4|). Hint: Show ker(4) c ker(4|,) and
ker(4) Ɔ ker(9|4).
Let H a subgroup of G containing ker(9). Define the homomorphism
G' by yH = 4OL where i: H → G is the inclusion homomorphism t(h)
Transcribed Image Text:2. For both parts below, let p :G → G' be a group homomorphism. Let H' be a subgroup of G'. Show that the set H = {g € G| p(g) € H'} is a (a) subgroup of G. (b) elH: H → for all h e H. Show that ker(9) = ker(4|). Hint: Show ker(4) c ker(4|,) and ker(4) Ɔ ker(9|4). Let H a subgroup of G containing ker(9). Define the homomorphism G' by yH = 4OL where i: H → G is the inclusion homomorphism t(h)
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