Negative vector bundle

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A holomorphic vector bundle (cf. also Vector bundle, analytic) over a complex space that possesses a Hermitian metric such that the function on is strictly pseudo-convex outside the zero section (this is denoted by ). The vector bundle is negative if and only if the dual vector bundle (see Positive vector bundle). If is a manifold, then the condition of being negative can be expressed in terms of the curvature of the metric . Any subbundle of a negative vector bundle is negative. A vector bundle over a complex manifold is said to be negative in the sense of Nakano if is positive in the sense of Nakano. A holomorphic vector bundle over a compact complex space is said to be weakly negative if its zero section possesses a strictly pseudo-convex neighbourhood in , i.e. if is weakly positive. Every negative vector bundle over is weakly negative. Negative and weakly negative linear spaces over a space are also defined in this way.

For references see Positive vector bundle.

How to Cite This Entry:
Negative vector bundle. Encyclopedia of Mathematics. URL:
This article was adapted from an original article by r group','../u/u095350.htm','Unitary transformation','../u/u095590.htm','Vector bundle, analytic','../v/v096400.htm')" style="background-color:yellow;">A.L. Onishchik (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article