Formality of the Dolbeault complex and deformations of holomorphic Poisson manifolds

Abstract: The purpose of this paper is to study the properties of holomorphic Poisson manifolds $(M,\pi)$ under the assumption of $\partial_{}\bar{\partial}$--lemma or $\partial_{\pi}\bar{\partial}$--lemma. Under these assumptions,we show that the Koszul--Brylinski homology can be recovered by the Dolbeault cohomology, and prove that the DGLA $(A_M^{\bullet,\bullet},\bar{\partial},[-,-]{\partial\pi})$ is formal.Furthermore,we discuss the Maurer--Cartan elements of $(A_M^{\bullet,\bullet}[[t]],\bar{\partial},[-,-]{\partial\pi})$ which induce the deformations of complex structure of $M$.