An upper bound for the minimum modulus in a covering system with squarefree moduli

Maria Cummings, Michael Filaseta, Ognian Trifonov

Based on work of P. Balister, B. Bollobás, R. Morris, J. Sahasrabudhe and M. Tiba, we show that if a covering system has distinct squarefree moduli, then the minimum modulus is at…