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math.RA2022
A new infinite family of -elementary rings
Eric Swartz, Nicholas J. Werner
A cover of an associative (not necessarily commutative nor unital) ring is a collection of proper subrings of whose set-theoretic union equals . If such a cover exists,…
math.RA2020
Covering numbers of commutative rings
Eric Swartz, Nicholas J. Werner
A cover of a unital, associative (not necessarily commutative) ring is a collection of proper subrings of whose set-theoretic union equals . If such a cover exists, then…