Chittur Gopalakrishnavishwanathasrinivasaiyer Lemma

We know that an  exists that equal to  This  is very powerful in competition math problems. Usually coming up on JMO and AMO geo problems. The Euler Line intersects the radical axis at  where  is the number of composite factors the radius has. This theorem is also used in Newton's Sums, as the th root unity is the same thing as    Finally, you'll se it in combo! The number ways you can shuffle  things into  items where  is the number of partitions in an item is the  My coach Iyer Sir approved this nice lemma.