let and since there exist such that thus:
see my post in http://www.mathhelpforum.com/math-he...tensor-zn.html for a general form of your question.
If is prime and , prove .
let and since there exist such that thus:
see my post in http://www.mathhelpforum.com/math-he...tensor-zn.html for a general form of your question.
If is prime and , prove .