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- The difference of 5 and 3 is denoted by
I(5

_{N}, 3_{N}) = <2_{N}, 0_{N}> = 2_{Z}. - The difference of 3 and 5 is denoted by
I(3

_{N}, 5_{N}) = <0_{N}, 2_{N}> = -2_{Z}.

Now it remains to define the arithmetic operations.

Author: Wolfgang Schreiner

Last Modification: November 16, 1999