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gptkbp:isUniversalInitialObject
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category of rings
category of Dedekind domains
category of Euclidean domains
category of Noetherian rings
category of commutative rings
category of countable rings
category of infinite rings
category of integral domains
category of principal ideal domains
category of rings with characteristic 0
category of rings with unit group {1, -1}
category of totally ordered rings
category of unique factorization domains
category of unital rings
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