2 citations · 2 across the 3 of their papers we have counts for
3 papers
math.CO2026
The Universal Post-Lie-Rinehart Algebra of Planar Aromatic Trees
Ludwig Rahm
This paper defines the algebraic structure of tracial post-Lie-Rinehart algebras and describes the free object in this category. Post-Lie-Rinehart algebras is a generalisation of p…
math.CO2022★ 2 cited
Planar Regularity Structures
Ludwig Rahm
Branched rough paths, used to solve ODEs on , have been generalised in two different directions. In one direction, there are regularity structures aimed at solving SPDE…
math.CO2021
An operadic approach to substitution in Lie-Butcher series
Ludwig Rahm
The paper follows an operadic approach to provide a bialgebraic description of substitution for Lie-Butcher series. We first show how the well-known bialgebraic description for sub…