For any positive integer <I>n</I>, let
<I>&#969<sub>1</sub>,
 &#969<sub>2</sub>, &#8230,
 &#969<sub>n</i></sub> denote the primitive <I>n</i>th roots of unity.

Then the polynomial<br>
&#934(<I>x</I>) =
(<I>x - &#969<SUB>1</SUB></I>)</I>(<i>x - &#969<SUB>2</SUB></I>)  &#8230(<I>x - &#969<SUB>&#966(<i>n</I></SUB></I>).