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math.NT2020
Smallest common denominators for the homogeneous components of the Baker-Campbell-Hausdorff series
Harald Hofstätter
In a recent paper the author derived a formula for calculating common denominators for the homogeneous components of the Baker-Campbell-Hausdorff (BCH) series. In the present work…
math.NT2020
Denominators of coefficients of the Baker-Campbell-Hausdorff series
Harald Hofstätter
For the computation of terms of the Baker-Campbell-Hausdorff series $H = \log(e^Ae^B})$ some a priori knowledge about the denominators of the coefficients of the series can be bene…