On the convergence and optimization of t
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Sergio Blanes; Fernando Casas
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Article
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2004
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Elsevier Science
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English
β 296 KB
In this paper the problem of the convergence of the Baker-Campbell-Hausdorff series for Z = log(e X e Y ) is revisited. We collect some previous results about the convergence domain and present a new estimate which improves all of them. We also provide a new expression of the truncated Lie presentat