A distinct covering system of congruences (DCSC) is a finite collection of congruences
whose union is the integers. I will discuss my solution of Erdős' minimum modulus problem for covering systems, which showed that any DCSC has m1 < 1016. Then I will discuss joint work with Nielsen in which we prove that any DCSC has a modulus divisible by either 2 or 3.
Before the talk, at 3:10pm, there will be tea and cookies in Wean 6220.
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