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Vector-valued holomorphic functions in several variables
Publikationstyp
Journal Article
Date Issued
2020
Sprache
English
Author(s)
Institut
TORE-URI
Journal
Volume
63
Issue
2
Start Page
247
End Page
275
Citation
Functiones et Approximatio Commentarii Mathematici 63 (2): 247-275 (2020)
Publisher DOI
Scopus ID
ArXiv ID
Publisher
Adam Mickiewicz University, Faculty of Mathematics and Computer Science
In the present paper we give some explicit proofs for folklore theorems on holomorphic functions in several variables with values in a locally complete locally convex Hausdorff space E over C. Most of the literature on vector-valued holomorphic functions is either devoted to the case of one variable or to infinitely many variables whereas the case of (finitely many) several variables is only touched or is subject to stronger restrictions on the completeness of E like sequential completeness. The main tool we use is Cauchy's integral formula for derivatives for an E-valued holomorphic function in several variables which we derive via Pettis-integration. This allows us to generalise the known integral formula, where usually a Riemann-integral is used, from sequentially complete E to locally complete E. Among the classical theorems for holomorphic functions in several variables with values in a locally complete space E we prove are the identity theorem, Liouville's theorem, Riemann's removable singularities theorem and the density of the polynomials in the E-valued polydisc algebra.
Subjects
vector-valued
holomorphic
weakly holomorphic
several variables
locally complete
DDC Class
510: Mathematik