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  3. 4 a let g and h be groups and let...

Question: 4 a let g and h be groups and let...

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4) a) Let G and H be groups and let T:G H be an isomorphism. Show that (g-1) r(g)-1 for any geG b) Let G be a group and a e G. Define C(a) (ge G:ga ag). The set C(a) is called [10) the centralizer of a. Show that C(a) is a subgroup of G, and find the centralizer of фіп D3.
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