Let G be a group, and let xeG. How are o(x) and o(x) related? Prove your assertion

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter3: Groups
Section3.3: Subgroups
Problem 24E: 24. Let be a group and its center. Prove or disprove that if is in, then and are in.
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Let G be a group, and let xeG. How are o(x) and o(x) related? Prove your
assertion
Transcribed Image Text:Let G be a group, and let xeG. How are o(x) and o(x) related? Prove your assertion
Expert Solution
Step 1

According to the given conditions:

let G be a group and let xe G,
it is needed to assert how o (x) and o(x") ar
Step 2

Now, assume that order of element and its inverse are different:

= e )
let o (x)mx"-
o(x1)n(x) e.)
Step 3

Now, consider the first equation:

o(x)m
xe
m
multiply both side of equation by x" to get:
(x")(x)=e(xm)
e x
-m
x)o(x)
n<m.A)
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