On the intersection density of primitive groups of degree a product of two odd primes

A subset F of a finite transitive group G?Sym(?) is intersecting if for any g,h?F there exists ??? such that ?g=?h. The intersection density ?(G) G the maximum {|F||G?||F?G intersecting}, where G? stabilizer ? in G. In this paper, it proved an imprimitive degree pq, p and q are distinct odd primes, with at least two systems imprimitivity then ?(G)=1. Moreover, primitive ?(G)=1, whenever socle admits subgroup.