Omni-MATH / Let N denote the set of positive integers. Find all functions f:N→N such that f(m+n)f(m−n)=f(m²) for m,n∈N. · Discussion

Discussing Let N denote the set of positive integers. Find all functions f:N→N such that f(m+n)f(m−n)=f(m²) for m,n∈N. · Omni-MATH

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