Theory of Hypergeometric Functions

Nonfiction, Science & Nature, Mathematics, Functional Analysis, Geometry
Cover of the book Theory of Hypergeometric Functions by Kazuhiko Aomoto, Michitake Kita, Toshitake Kohno, Springer Japan
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Author: Kazuhiko Aomoto, Michitake Kita, Toshitake Kohno ISBN: 9784431539384
Publisher: Springer Japan Publication: May 21, 2011
Imprint: Springer Language: English
Author: Kazuhiko Aomoto, Michitake Kita, Toshitake Kohno
ISBN: 9784431539384
Publisher: Springer Japan
Publication: May 21, 2011
Imprint: Springer
Language: English

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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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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