On the recurrence set of planar Markov Random Walks
  In this paper, we investigate the properties of recurrent planar Markov random walks. More precisely, we study the set of recurrent points with the use of local limit theorems. The Nagaev-Guivarc'h spectral method provides several examples for which these local limit theorems are satisfied as soon as the (standard or non-standard) central limit theorem holds. 
Lo\"ic Herv\'e (IRMAR), Fran\c{c}oise P\`ene (LM)
math.PR