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stf123 November 14th, 2007 06:14 AM

ring
 
Take the ring R=Z/4Z. Find a polynomial of degree 1 in R[X] such that its square is the constant 1.

Le barbu rasé November 14th, 2007 10:50 AM

easy!

use the "4=0" force

just17b November 27th, 2007 12:42 PM

How do you do that?

ThSQ December 7th, 2007 07:47 AM

What is the square of 1 + 2*a in R ?


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