I dont really understand how you did that.
a^t = 1 mod p makes sense clearly by definition of order
but then in the third step im a bit lost. Can you expand?
Thanks so much for ur help
I dont really understand how you did that.
a^t = 1 mod p makes sense clearly by definition of order
but then in the third step im a bit lost. Can you expand?
Thanks so much for ur help
The third step is high school algebra:
This follows from the formula for the sum of geometric sequences.