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https://arxiv.org/abs/1808.04156 [1808.04156] The Magnus expansion and Post-Lie algebras Abstract page for arXiv paper 1808.04156: The Magnus expansion and Post-Lie algebras magnus expansion 1808 04156 post lie https://arxiv.org/abs/2004.10152 [2004.10152] Cumulant-cumulant relations in free probability theory from Magnus' expansion Abstract page for arXiv paper 2004.10152: Cumulant-cumulant relations in free probability theory from Magnus' expansion free probability theory 2004 10152 cumulant relations https://arxiv.org/abs/2312.16674 [2312.16674] What is the Magnus Expansion? Abstract page for arXiv paper 2312.16674: What is the Magnus Expansion? what is 2312 16674 magnus expansion