lecture -10 : Some Theorems on order of Element of Group II

In this video following theorems are proved
1. order of an element is equal to order of its inverse
2. order of integer power of an element is less than or equal to order of element.
3. Identity element is only element of order one in a Group.
4. if a is any element of a group then o(a)= o(xax-1) for all elements x of Group.

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