A new generalization of the Lelong number

Details A new generalization of the Lelong number A new generalization of the Lelong number

2010-01-20

arxiv.org/abs/1001.3562v1

Mathematics

Complex Variables

29 pages

Scientific paper

We introduce a quantity which measures the singularity of a plurisubharmonic function f relative to another plurisubharmonic function g, at a point a. This quantity, which we denote by $\nu_{a,g}(f)$, can be seen as a generalization of the classical Lelong number, in a natural way. The main theorem of this article says that the upper level sets of our generalized Lelong number, i.e. the sets of the form $\{z: \nu_{z,g}(f) \geq c > 0 \}$, are in fact analytic sets, under certain conditions on the weight g.

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