On a generalization of Chen's iterated integrals

Details On a generalization of Chen's iterated integrals On a generalization of Chen's iterated integrals

2007-12-29

arxiv.org/abs/0801.0023v3

J. Number Theory, 130 no.2, Feb 2010, pp. 254-288

Mathematics

Number Theory

v3 contains a corrected version of the proof of Theorem 12

Scientific paper

Chen's iterated integrals may be generalized by interpolation of functions of the positive integer number of times which particular forms are iterated in integrals along specific paths, to certain complex values. These generalized iterated integrals satisfy both an additive and a (non-classical) multiplicative iterative property, in addition to a comultiplication formula. This theory is developed in the first part of the paper, after which various applications are discussed, including the expression of certain zeta functions as complex iterated integrals (from which an obstruction to the existence of a contour integration proof of the functional equation for the Dedekind zeta function emerges); an elegant reformulation of a result of Gel'fand and Shilov in the theory of distributions which gives a way of thinking about complex iterated derivatives; and a direct topological proof of the monodromy of polylogarithms.

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