Bott-Chern blow-up formula and bimeromorphic invariance of the $\partial \bar{\partial }$-Lemma for threefolds

Abstract

The purpose of this paper is to study the bimeromorphic invariants of compact complex manifolds in terms of Bott-Chern cohomology. We prove a blow-up formula for Bott-Chern cohomology. As an application, we show that for compact complex threefolds the non-Kählerness degrees, introduced by Angella-Tomassini [Invent. Math. 192, (2013), 71-81], are bimeromorphic invariants. Consequently, the $\partial \bar{\partial }$-Lemma on threefolds admits the bimeromorphic invariance.

24 pages