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playa007
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Homework Statement
Let G be a finite group and let I ={g in G: g^2 = e} \ {e} be its subset of involutions. Show that G is abelian if card(I) => (3/4)card(G).
Being Abelian means that the group follows the commutative property, meaning that the order of operations does not affect the outcome of the group's operation. In other words, for any two elements a and b in the group, a * b = b * a.
To prove that a group is Abelian, we need to show that for any two elements a and b in the group, a * b = b * a. This can be done by using the group's operation table and showing that the order of elements does not affect the outcome of the operation.
A finite group is a group with a finite number of elements. This means that there are a limited number of elements that can be used in the group's operation.
Proving that a group is Abelian can help simplify calculations and make it easier to understand the group's properties. It also allows us to apply specific theorems and techniques that only apply to Abelian groups.
No, a group cannot be both Abelian and non-Abelian. A group either follows the commutative property, making it Abelian, or it does not, making it non-Abelian.