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Published byKelly Nichols Modified over 9 years ago
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Let H be a normal subgroup of a group G. Define j: G ® G/H by: (a) j(ab) = j(a)j(b) (b) j(a) = Ha (c) j(Ha) = a (d) j(ab) = Hab (e) j(ab) = HaHb
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Let H be a normal subgroup of a group G. Define j: G ® G/H by j(a) = Ha. Is j a homomorphism? (a) Yes (b) No
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Let H be a normal subgroup of a group G. Define j: G ® G/H by j(a) = Ha. Is j one-to-one? (a) Yes (b) No
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Let H be a normal subgroup of a group G. Define j: G ® G/H by j(a) = Ha. Is j onto? (a) Yes (b) No
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Let G be any group. Define j: G ® G Z 2 by: (a) j(ab) = j(a)j(b) (b) j(g) = (g 1, g 2 ) (c) j(g 1, g 2 ) = g 1 (d) j(a) = (a, 0) (e) j(g) = (g, 1)
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Let G be any group. Define j: G ® G Z 2 by j(a) = (a, 0). Is j a homomorphism? (a)Yes (b) No
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Let G be any group. Define j: G ® G Z 2 by j(a) = (a, 0). Is j one-to-one? (a)Yes (b) No
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Let G be any group. Define j: G ® G Z 2 by j(a) = (a, 0). Is j onto? (a)Yes (b) No
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Define j: S n ® Z 2 by: (a) j(ab) = j(a)j(b) (b) j(a) = Ha (c) j(g 1, g 2 ) = g 1 g 2 (d) j(f) = 0 if f is even, 1 if f is odd (e) j(f) = 0 if f is odd, 1 if f is even
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Define j: S n ® Z 2 by j(f) = 0 if f is even, 1 if f is odd Is j a homomorphism? Yes No
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Define j: S n ® Z 2 by j(f) = 0 if f is even, 1 if f is odd Is j one-to-one? Yes No
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Define j: S n ® Z 2 by j(f) = 0 if f is even, 1 if f is odd Is j onto? Yes No
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