Mathematics – Complex Variables
Scientific paper
2010-10-13
Mathematics
Complex Variables
Submitted to Amer. J. Math
Scientific paper
The K\"ahler rank of compact complex surfaces was introduced by Harvey and Lawson in their 1983 paper on K\"ahler manifolds as a measure of ``k\"alerianity''. Here we give a partial classification of compact complex surfaces of K\"ahler rank 1. These are either elliptic surfaces, or Hopf surfaces, or they admit a holomorphic foliation of a very special type. As a consequence we give an affirmative answer to the question raised by Harvey and Lawson whether the K\"ahler rank is a birational invariant.
Chiose Ionut
Toma Matei
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