释义 |
Unit RingA unit ring is a set together with two Binary Operators satisfying the following conditions: - 1. Additive associativity: For all
, , - 2. Additive commutativity: For all
, , - 3. Additive identity: There exists an element
such that for all , - 4. Additive inverse: For every
, there exists a such that , - 5. Multiplicative associativity: For all
, , - 6. Multiplicative identity: There exists an element
such that for all , , - 7. Left and right distributivity: For all
, and . Thus, a unit ring is a Ring with a multiplicative identity.See also Binary Operator, Ring References
Rosenfeld, A. An Introduction to Algebraic Structures. New York: Holden-Day, 1968.
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