I do not know to to explicitly state the homomorphism. (Revision Question).
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Check http://math.stackexchange.com/a/2004855/329832 – RGS Nov 08 '16 at 10:36
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i still cant get it. – Manson Nov 08 '16 at 10:58
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Do you know the notion sign or signature of a permutation? If yes, use it. If no, look it up. – quid Nov 08 '16 at 11:13
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Can anyone please explain to me how to show that the kernel is An. I feel stuck – Manson Nov 08 '16 at 12:21