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arXiv 1208.0754math.CA
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Lambert $W$函数级数在$\C$中的收敛性

Convergence in $\C$ of series for the Lambert $W$ Function

German A. Kalugin, David J. Jeffrey

摘要:

研究了Lambert $W$函数的级数展开式.我们证明了已知的渐近级数在实域和复域都收敛。我们建立了精确的收敛域和级数的其他性质,包括展开系数的渐近表达式。我们引入一个新的不变变换的系列。该变换包含一个参数,其对域和收敛速率的影响进行了理论和数值研究。我们还给出了其他表示的展开系数,这意味着一些组合的身份。

英文摘要:

We study some series expansions for the Lambert $W$ function. We show that known asymptotic series converge in both real and complex domains. We establish the precise domains of convergence and other properties of the series, including asymptotic expressions for the expansion coefficients. We introduce an new invariant transformation of the series. The transformation contains a parameter whose effect on the domain and rate of convergence is studied theoretically and numerically. We also give alternate representations of the expansion coefficients, which imply a number of combinatorial identities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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