مشخصات پژوهش

In this paper, we define right-invariant (similarly, left-invariant) Poisson-Nijenhuis Struc- tures on Lie groupoids and their infinitesimal counterparts as called (; n)􀀀structures. Also, we present a mutual correspondence between (; n)􀀀structures on Lie algebroids with Poisson-Nijenhuis structures (;N) on their Lie groupoids under some conditions.