How do I see that for any natural non-zero n:(adsbygoogle = window.adsbygoogle || []).push({});

[itex]\left( \prod_{1 \leq d \leq n \quad d | n} \right) \left( \prod_{0 \leq i \leq d-1 \quad \textrm{gcd}(d,i)=1} \right) a_i = \prod_{0 \leq i \leq n-1} a_i[/itex]?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# How do I see this? Simplification

**Physics Forums | Science Articles, Homework Help, Discussion**