- #1
JFo
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How many homomorphisms are there from [itex]S_5[/itex] to [itex]\mathbb{Z}_5[/itex]?
Well there is at least one, the trivial homomorphism, ie: every element of S_5 gets mapped to 0.
I have a feeling that this is the only homomorphism but am having trouble proving that no other homomorphism could exist. Any suggestions?
I know that every nonzero element of Z_5 has order of 5, and for a non-trivial homomorphism to exist, there needs to be some element of S_5 (not equal to the identity) that gets mapped to a nonzero element of Z_5.
Well there is at least one, the trivial homomorphism, ie: every element of S_5 gets mapped to 0.
I have a feeling that this is the only homomorphism but am having trouble proving that no other homomorphism could exist. Any suggestions?
I know that every nonzero element of Z_5 has order of 5, and for a non-trivial homomorphism to exist, there needs to be some element of S_5 (not equal to the identity) that gets mapped to a nonzero element of Z_5.
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