# What is the meaning of this expression ?

$$nZ/mZ$$

where / means a quotient group

if n=1 then $$Z/mZ$$ is the set of integers modulus n {0,1,2,3,4,....,n-1} in case

m=2 we have a binary system, but i do not know what (1) will mean

of ocurse 'Z' means the set of all (positive) integers.

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matt grime