The Szegö metric associated to Hardy spaces of Clifford algebra valued functions and some geometric properties

Details The Szegö metric associated to Hardy spaces of Clifford algebra valued functions and some geometric properties The Szegö metric associated to Hardy spaces of Clifford algebra valued functions and some geometric properties

2011-03-16

arxiv.org/abs/1103.3195v1

Mathematics

Complex Variables

21 pages

Scientific paper

In analogy to complex function theory we introduce a Szeg\"o metric in the context of hypercomplex function theory dealing with functions that take values in a Clifford algebra. In particular, we are dealing with Clifford algebra valued functions that are annihilated by the Euclidean Dirac operator in $\mathbb{R}^{m+1}$. These are often called monogenic functions. As a consequence of the isometry between two Hardy spaces of monogenic functions on domains that are related to each other by a conformal map, the generalized Szeg\"o metric turns out to have a pseudo-invariance under M\"obius transformations. This property is crucially applied to show that the curvature of this metric is always negative on bounded domains. Furthermore, it allows us to establish that this metric is complete on bounded domains.

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