Omni-MATH / Find f:Z_(+)→Z_(+), such that for any x,y∈Z_(+), f(f(x)+y)∣x+f(y). · Discussion

Discussing Find f:Z_(+)→Z_(+), such that for any x,y∈Z_(+), f(f(x)+y)∣x+f(y). · Omni-MATH

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