Applications for the order of an element in a group G

98 Views Asked by At

Can someone give me concrete applications for the order of an element in a group G?

I found a lot of properties/lemmas of it but no concrete applications.

1

There are 1 best solutions below

3
On

Lagrange's Theorem says the order of a group is a multiple of the order of its subgroup. This directly implies the Euler's theorem( full version of Fermat's little theorem). Now Euler's theorem is used in cryptography, specifically the RSA algorithm.

But believe me this is just the tip of the iceberg!

P.S. it would be more specific if you asked the application of a certain theorem concerning the order of a group.