Partition dimension of projective planes
  We determine the partition dimension of the incidence graph $G(\Pi_q)$ of the projective plane $\Pi_q$ up to a constant factor $2$ as $(2+o(1))\log_2{q}\leq \mathrm{pd}(G(\Pi_q))\leq (4+o(1))\log_2{q}.$ 
Zolt\'an Bl\'azsik, Zolt\'an L\'or\'ant Nagy
math.CO