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20222025
most citedTwo-parameter sums signatures and corresponding quasisymmetric functions

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math.RA2023

The barycenter in free nilpotent Lie groups and its application to iterated-integrals signatures

Marianne Clausel, Joscha Diehl, Raphael Mignot +3

We establish the well-definedness of the barycenter (in the sense of Buser and Karcher) for every integrable measure on the free nilpotent Lie group of step (over $\mathbb{R}^d…