Theory of Hypergeometric Functions [electronic resource] / by Kazuhiko Aomoto, Michitake Kita.
By: Aomoto, Kazuhiko [author.].
Contributor(s): Kita, Michitake [author.] | SpringerLink (Online service).
Material type:
BookSeries: Springer Monographs in Mathematics: Publisher: Tokyo : Springer Japan : Imprint: Springer, 2011Description: XVI, 320 p. online resource.Content type: text Media type: computer Carrier type: online resourceISBN: 9784431539384.Subject(s): Mathematics | Functional analysis | Geometry | Mathematics | Geometry | Functional AnalysisDDC classification: 516 Online resources: Click here to access online 1 Introduction: the Euler-Gauss Hypergeometric Function -- 2 Representation of Complex Integrals and Twisted de Rham Cohomologies -- 3 Hypergeometric functions over Grassmannians -- 4 Holonomic Difference Equations and Asymptotic Expansion References Index.
This book presents a geometric theory of complex analytic integrals representing hypergeometric functions of several variables. Starting from an integrand which is a product of powers of polynomials, integrals are explained, in an open affine space, as a pair of twisted de Rham cohomology and its dual over the coefficients of local system. It is shown that hypergeometric integrals generally satisfy a holonomic system of linear differential equations with respect to the coefficients of polynomials and also satisfy a holonomic system of linear difference equations with respect to the exponents. These are deduced from Grothendieck-Deligne’s rational de Rham cohomology on the one hand, and by multidimensional extension of Birkhoff’s classical theory on analytic difference equations on the other.
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