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math.NT2018
A generalization of Menon's identity with Dirichlet characters
Yan Li, Xiaoyu Hu, Daeyeoul Kim
The classical Menon's identity [7] states that \begin{equation*}\label{oldbegin1} \sum_{\substack{a\in\Bbb Z_n^\ast }}\gcd(a -1,n)=φ(n) σ_{0} (n), \end{equation*} where for a posit…
math.NT2011
A question of Sárkozy and Sós on representation functions
Yan Li, Lianrong Ma
For , let and be fixed positive integers. Assume there exists a prime and an integer such that , but $p^t\…
math.NT2011
A question of Sárkozy and Sós on representation functions] {A question of Sárkozy and Sós on representation functions
Yan Li, Lianrong Ma
For , let and be fixed positive integers. Assume there exists a prime and an integer such that , but $p^t\…