Sun's permutation conjecture for nonvanishing products modulo n

Let n>1n>1 be an integer, and let D(n)D(n) denote the set of positive divisors of nn. For integers m1,,mn1m_1,\ldots,m_{n-1}, assume that

{1s<n: dms}d1for every dD(n).\left|\{1\leqslant s<n:\ d\nmid m_s\}\right|\geqslant d-1\qquad\text{for every }d\in D(n).

Sun's conjecture. There exists a permutation σ\sigma of {1,,n1}\{1,\ldots,n-1\} such that nsmσ(s)n\nmid s m_{\sigma(s)} for every s=1,,n1s=1,\ldots,n-1. Theorem 1.1 in the paper confirms this conjecture in the cyclic-group case.

Sources & referencesView supporting material

Primary source

Fan Ge and Zhi-Wei Sun, “On a permutation problem for finite abelian groups”, arXiv:1601.04988 (2017).

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