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Discussion of Problem 1204. Idempotents

problem understanding
Posted by Hanzbrow (TNU) KCC 21 Feb 2009 10:37
I'm really anxious about it.
I do not really understand problem...
What means x*x = x (mod n). What theese brackets mean?

Example:
6                   0 1 3 4
4*4=4%6????
16=4?????????????????????????????

please, help me.
Thanks anyway.
Re: problem understanding
Posted by ural_majunwen 4 Aug 2009 13:12
x*x = x (mod n)  means  x*x mod n = x