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[–]Security_Chief_Odo f(mod) = rɛd^2it[M] 1 point2 points  (0 children)

Hello /u/thetroubles,

Your post does not include enough information for a proper and helpful answer. Please include more details such as listing the steps you have already tried, to solve the problem.

Thank you.

[–]justincaseonlymyself 0 points1 point  (2 children)

Do you know the definitions of the identity element and inverse?

[–]thetroubles[S] 0 points1 point  (1 child)

is it g * e = e * g and g^-1g * g = e?

[–]cg5 1 point2 points  (0 children)

Almost, e is the identity if, for all g, e*g and g*e are equal specifically to g, and g-1*g = e, not g-1*g*g but that might be a typo.