# An Algorithm for the Local Residues with the Viewpoint of D-Module

• Yayoi Nakamura
• Shinichi Tajima
Part of the International Society for Analysis, Applications and Computation book series (ISAA, volume 8)

## Abstract

The local residue has been presented since the early days of several complex variables and plays a fundamental role in complex analysis and geometry. Nevertheless, in many cases, there are very few practical tools in the computational point of view.

The purpose of this note is to give a new algorithm for computing the local residue with the viewpoint of the theory of D-modules. For a given regular sequence of holomorphic functions, consider the algebraic local cohomology group with support at the set of common zeros of these functions. If the set of common zeros consists of finitely many points, the cohomology classes with sup­port at each zero can be characterized as a solution of a system of certain linear partial differential equations. In this note, a system of such linear partial differential equations is constructed by using the transformation formula. And, on the basis of the properties of the image of adjoint operators of the system, an algorithm for computing local residues is provided.

Reso

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