Double shuffle relations for arborified zeta values
arXiv:1812.00777 · doi:10.1016/j.jalgebra.2019.10.015
Abstract
Arborified zeta values are defined as iterated series and integrals using the universal properties of rooted trees. This approach allows to study their convergence domain and to relate them to multizeta values. Generalisations to rooted trees of the stuffle and shuffle products are defined and studied. It is further shown that arborifed zeta values are algebra morphisms for these new products on trees.
Match the version to be published in Journal of Algebra. One diagram added, minor modifications