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Zhiyong Zheng (1996)
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Beifang Chen, Zhi-Wei Sun (2002)
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For integers a, b and n > 0, define $$ A_{\Gamma } {\left( {a,b,n} \right)} = {\sum\limits_{\begin{array}{*{20}c} {{r = 1}} \\ {{n\nmid b}} \\ \end{array} }^n {'\;\;{\left( {{\left( {\frac{{ar}} {n}} \right)}} \right)}} }\ln \Gamma {\left( {{\left\{ {\frac{{b\ifmmode\expandafter\bar\else\expandafter\=\fi{r}}} {n}} \right\}}} \right)} $$ and $$ B_{\Gamma } {\left( {a,b,n} \right)} = {\sum\limits_{\begin{array}{*{20}c} {{r = 1}} \\ {{n\nmid b}} \\ \end{array} }^n {'\;\;{\left( {{\left( {\frac{{ar}} {n}} \right)}} \right)}} }\frac{{{\Gamma }\ifmmode{'}\else$'$\fi{\left( {{\left\{ {\frac{{b\ifmmode\expandafter\bar\else\expandafter\=\fi{r}}} {n}} \right\}}} \right)}}} {{\Gamma {\left( {{\left\{ {\frac{{b\ifmmode\expandafter\bar\else\expandafter\=\fi{r}}} {n}} \right\}}} \right)}}}, $$ where $$ {\sum\limits{_r} ' } $$ denotes the summation over all r such that (r, n) = 1, and $$ \overline{r} $$ is defined by the equation $$ r\overline{r} \equiv 1\;\bmod n $$ . The two sums are analogous to the homogeneous Dedekind sum S(a,b, n). The functional equations for A Γ and B Γ are established. Furthermore, Knopp's identity on Dedekind sum is extended.
Bulletin of the Brazilian Mathematical Society, New Series – Springer Journals
Published: Jan 1, 2007
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