I've been trying to understand the explicit CBH formula(adsbygoogle = window.adsbygoogle || []).push({});

http://en.wikipedia.org/wiki/Baker–...er.E2.80.93Campbell.E2.80.93Hausdorff_formula

However, I don't really understand how to know what the values of [itex]r_i[/itex] and [itex]s_i[/itex] are, where [itex]1\leq i\leq n[/itex].

Thanks.

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# Baker–Campbell–Hausdorff (CBH) Formula question

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