On the irrationality of generalized q-logarithm

On the irrationality of generalized q-logarithm
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论广义q对数的无理性

DOI:
10.1007/s40993-016-0042-x
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发表时间:
2016
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影响因子:
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通讯作者:
W. Zudilin
W. Zudilin
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--
文献类型:
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作者:
W. Zudilin

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对于integerp,|p|>1和一般有理数xandz,我们建立了级数$$\开始{aligned} \ell _p(x,z)=x\sum _{n=1}^\infty \frac{z^n}{p^n-x}的无理性。\end{aligned}$$它是q-对数函数(and where)的对称()推广,后者又推广了q-调和级数()。我们的证明利用建立在Padé近似的汉克尔行列式。
For integerp, |p|>1, and generic rationalxandz, we establish the irrationality of the series $$\begin{aligned} \ell _p(x,z)=x\sum _{n=1}^\infty \frac{z^n}{p^n-x}. \end{aligned}$$It is a symmetric () generalization of theq-logarithmic function (andwhere), which in turn generalizes theq-harmonic series (). Our proof makes use of the Hankel determinants built on the Padé approximations to.